topic Re: Exception on preview of txt files in Alfresco Forum

Exception on preview of txt files

nettania — Thu, 11 Jul 2019 14:02:05 GMT

Hi,I have installed Alfresco 6.1.2 CE ond a W2019 server. Meanwhile the preview on other files is working perfectly, on certain txt files I am getting the information, that the pdf preview could not be displayed. In alfresco log the following exception is noted:2019-07-11 15:53:28,076 INFO [org.alfr

Re: Exception on preview of txt files

heiko_robert — Thu, 11 Jul 2019 16:03:19 GMT

Florian,

it is long time ago I run alfresco on win but shouldn't you use single forward or double backslashes ?

alfresco-pdf-renderer.root=C:\\alfresco-nettania\\alfresco-pdf-renderer

img.root=C:\\ImageMagick-7.0‍‍‍.8-Q16‍‍‍‍‍‍‍‍‍‍‍‍

Re: Exception on preview of txt files

nettania — Mon, 15 Jul 2019 09:10:57 GMT

Hi, thank you for your reply! The path seems to be right (took it from the configuration of Alfresco 5 created by the windows installer), this behaviour only happens with certain files, other txt files are displayed fine. Today I also mentioned that with one excel file the same behaviour and error occurs. It seems, that there is soemthing wrong with certain created preview. Is the a possibility to force a new creation of a preview?

Thanks,

Florian

Re: Exception on preview of txt files

abhinavmishra14 — Mon, 15 Jul 2019 13:27:41 GMT

Are you getting error for all PDF files or just few ?

To answer your question, you can force thumbnail generation using two approaches.

1- Implement a behavior and implement ContentServicePolicies.OnContentUpdatePolicy. You can add a flag in global property file if you want to decide whether thumbnails should be forced async or sync and then on content update use thumbnail service to force the generation. See sample below:

// Have the thumbnail created
if (!async) {
try {
// Create the thumbnail
thumbnailService.createThumbnail(nodeRef, ContentModel.PROP_CONTENT, thumbnailDefinition.getMimetype(),
thumbnailDefinition.getTransformationOptions(), thumbnailDefinition.getName());
} catch (AlfrescoRuntimeException excp) {
if (excp.getRootCause() instanceof UnimportantTransformException){
LOGGER.error("Unable to create thumbnail {} due to {}", thumbnailDefinition.getName(), excp.getRootCause().getMessage());
}
}
} else {
final Action action = ThumbnailHelper.createCreateThumbnailAction(thumbnailDefinition, serviceRegistry);
// Queue async creation of thumbnail
actionService.executeAction(action, nodeRef, true, async);
}‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

2- Implement an action on share side for the content types you want to force. Create an evaluator to figure out whether thumbnail generation failed or not , if failed then enable the action and trigger the action to re-try/generate the thumbnails.

<bean id="evaluator.doclib.action.isValidFailedThumb" class="com.github.xyz.evaluator.IsFailedThumb"/>

//File where thumbnail generation fails, alfresco will apply 'cm:failedThumbnailSource' aspect on those nodes.

import org.alfresco.web.evaluator.BaseEvaluator;
import org.json.simple.JSONArray;
import org.json.simple.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;


public class IsFailedThumb extends BaseEvaluator {

	private static final Logger LOGGER = LoggerFactory.getLogger(IsFailedThumb.class);
	
	@Override
	public boolean evaluate(final JSONObject jsonObject) {
		final JSONObject nodeJson = (JSONObject) jsonObject.get("node");
		final JSONArray aspectsArray = (JSONArray) nodeJson.get("aspects");
		if (LOGGER.isDebugEnabled()) {
		  LOGGER.debug("Looking for aspect: cm:failedThumbnailSource");
		}
		return aspectsArray.contains("cm:failedThumbnailSource");
	}
}‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

<action id="generateThumb" type="javascript" label="action.generate.thumb" icon="generate-thumb">
<param name="function">onGenerateThumbAction</param>
<evaluator>evaluator.doclib.action.isValidFailedThumb</evaluator>
</action>

if (typeof thumb == undefined || !thumb) { var thumb = {}; }
if (!thumb.doc) { thumb.doc = {}; }
(function() {
   var Dom = YAHOO.util.Dom,
   Event = YAHOO.util.Event;
   var $html = Alfresco.util.encodeHTML,
   $combine = Alfresco.util.combinePaths,
   $siteURL = Alfresco.util.siteURL,
   $isValueSet = Alfresco.util.isValueSet;
   YAHOO.Bubbling.fire("registerAction", {
	      actionName: "onGenerateThumbAction",
	      fn: function thumb_onGenerateThumbAction(record) {
	    	 nodes=[];
	         var scope = this,
	         nodeRef = record.nodeRef,
	         jsNode = record.jsNode;
	         var generateThumbURL = Alfresco.constants.PROXY_URI+"/api/node/"+nodeRef.replace(":/","")+"/content/thumbnails?as=false";
	         var thumbnailObj = {
	        		 "thumbnailName":"doclib"
	         };
	         Alfresco.util.PopupManager.displayMessage({
					text : Alfresco.util.message("Please wait.."),
					spanClass : "wait",
					displayTime : 0
				});
	         Alfresco.util.Ajax.request(
	                  {
	                     url: generateThumbURL,
	                     method: Alfresco.util.Ajax.POST,
	                     requestContentType:Alfresco.util.Ajax.JSON,
	                     responseContentType: Alfresco.util.Ajax.JSON,
	                     dataObj:thumbnailObj,
	                     successCallback:
	                     {
	                        fn: function(){
	                        	//remove cm:failedThumbnailSource aspect after generating thumbnail
	                        	var added = [];
	                        	var removed = [];
	                        	removed.push("cm:failedThumbnailSource");
	                        	var aspectsJson = {
	                        			"added":added,
	                        			"removed":removed
	                        	}
	                        	var aspectsRemoveURL = Alfresco.constants.PROXY_URI+"slingshot/doclib/action/aspects/node/"+nodeRef.replace(":/","")
	                        	Alfresco.util.Ajax.request(
	               	                  {
	               	                     url: aspectsRemoveURL,
	               	                     method: Alfresco.util.Ajax.POST,
	               	                     requestContentType:Alfresco.util.Ajax.JSON,
	               	                     responseContentType: Alfresco.util.Ajax.JSON,
	               	                     dataObj:aspectsJson,
	               	                     successCallback:
	               	                     {
	               	                        fn: function(){
	               	                        	
	               	                        	YAHOO.Bubbling.fire("metadataRefresh");
	               	                        	Alfresco.util.PopupManager.displayMessage({
	               									text : Alfresco.util.message("Thumbnail generated Successfully..")
	               								});
	               	                        },
	               	                        scope: this
	               	                     },
	               	                     execScripts: true,
	               	                     failureMessage: Alfresco.util.message("Failed to generate thumbnail!")
	               	                  })
	                        	
	                        },
	                        scope: this
	                     },
	                     execScripts: true,
	                     failureMessage: Alfresco.util.message("Failed to generate thumbnail!")
	                  })
	      }
   });
})();‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Re: Exception on preview of txt files

nettania — Wed, 31 Jul 2019 08:50:56 GMT

Thank you for your help. I will try these two approaches. The error only occurs on certain files, most files are displayed fine, which means, libre office to convert, is configured properly.

Florian

Re: Exception on preview of txt files

nettania — Fri, 23 Aug 2019 14:48:22 GMT

The problem of the thumbnail generation occurs occasionaly esspecially on simple txt files and xls files. Sometimes I change a txt file in alfresco share but the preview still displays the old version. Currently I have a txt file where the following error is thrown. I already downloaded the file and uploaded it as new version.

2019-08-23 16:38:25,927 ERROR [org.springframework.extensions.webscripts.AbstractRuntime] [http-nio-8080-exec-29] Exception from executeScript: 07230013 Wrapped Exception (with status template): 07233083 Failed to execute script 'classpath*:alfresco/templates/webscripts/org/alfresco/repository/thumbnail/thumbnail.get.js': 07233082 07233081 A rendition of name: {http://www.alfresco.org/model/content/1.0}pdf should have been created for source node: workspace://SpacesStore/683f95bf-17a4-48e8-99bd-cfd3fddeaca6
org.springframework.extensions.webscripts.WebScriptException: 07230013 Wrapped Exception (with status template): 07233083 Failed to execute script 'classpath*:alfresco/templates/webscripts/org/alfresco/repository/thumbnail/thumbnail.get.js': 07233082 07233081 A rendition of name: {http://www.alfresco.org/model/content/1.0}pdf should have been created for source node: workspace://SpacesStore/683f95bf-17a4-48e8-99bd-cfd3fddeaca6
   at org.springframework.extensions.webscripts.AbstractWebScript.createStatusException(AbstractWebScript.java:1139)
   at org.alfresco.repo.web.scripts.content.StreamContent.execute(StreamContent.java:202)
   at org.alfresco.repo.web.scripts.RepositoryContainer$3.execute(RepositoryContainer.java:512)
   at org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:450)
   at org.alfresco.repo.web.scripts.RepositoryContainer.transactionedExecute(RepositoryContainer.java:587)
   at org.alfresco.repo.web.scripts.RepositoryContainer.transactionedExecuteAs(RepositoryContainer.java:656)
   at org.alfresco.repo.web.scripts.RepositoryContainer.executeScriptInternal(RepositoryContainer.java:428)
   at org.alfresco.repo.web.scripts.RepositoryContainer.executeScript(RepositoryContainer.java:308)
   at org.springframework.extensions.webscripts.AbstractRuntime.executeScript(AbstractRuntime.java:399)
   at org.springframework.extensions.webscripts.AbstractRuntime.executeScript(AbstractRuntime.java:210)
   at org.springframework.extensions.webscripts.servlet.WebScriptServlet.service(WebScriptServlet.java:132)
   at org.alfresco.repo.web.scripts.AlfrescoWebScriptServlet.service(AlfrescoWebScriptServlet.java:43)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
   at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
   at org.alfresco.module.aosmodule.service.ContextRootFilter.doFilter(ContextRootFilter.java:93)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
   at org.alfresco.web.app.servlet.GlobalLocalizationFilter.doFilter(GlobalLocalizationFilter.java:68)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
   at org.alfresco.web.app.servlet.ClearSecurityContextFilter.doFilter(ClearSecurityContextFilter.java:53)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
   at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:493)
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
   at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650)
   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
   at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:800)
   at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
   at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:806)
   at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1498)
   at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
   at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
   at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
   at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
   at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: org.alfresco.scripts.ScriptException: 07233083 Failed to execute script 'classpath*:alfresco/templates/webscripts/org/alfresco/repository/thumbnail/thumbnail.get.js': 07233082 07233081 A rendition of name: {http://www.alfresco.org/model/content/1.0}pdf should have been created for source node: workspace://SpacesStore/683f95bf-17a4-48e8-99bd-cfd3fddeaca6
   at org.alfresco.repo.jscript.RhinoScriptProcessor.execute(RhinoScriptProcessor.java:211)
   at org.alfresco.repo.processor.ScriptServiceImpl.execute(ScriptServiceImpl.java:219)
   at org.alfresco.repo.processor.ScriptServiceImpl.executeScript(ScriptServiceImpl.java:181)
   at org.alfresco.repo.web.scripts.RepositoryScriptProcessor.executeScript(RepositoryScriptProcessor.java:109)
   at org.springframework.extensions.webscripts.AbstractWebScript.executeScript(AbstractWebScript.java:1376)
   at org.alfresco.repo.web.scripts.content.StreamContent.execute(StreamContent.java:146)
   ... 42 more
Caused by: org.alfresco.service.cmr.thumbnail.ThumbnailException: 07233082 07233081 A rendition of name: {http://www.alfresco.org/model/content/1.0}pdf should have been created for source node: workspace://SpacesStore/683f95bf-17a4-48e8-99bd-cfd3fddeaca6
   at org.alfresco.repo.thumbnail.ThumbnailServiceImpl.createThumbnailNode(ThumbnailServiceImpl.java:788)
   at org.alfresco.repo.thumbnail.ThumbnailServiceImpl.access$4(ThumbnailServiceImpl.java:772)
   at org.alfresco.repo.thumbnail.ThumbnailServiceImpl$1$1.doWork(ThumbnailServiceImpl.java:427)
   at org.alfresco.repo.thumbnail.ThumbnailServiceImpl$1$1.doWork(ThumbnailServiceImpl.java:1)
   at org.alfresco.repo.security.authentication.AuthenticationUtil.runAs(AuthenticationUtil.java:623)
   at org.alfresco.repo.thumbnail.ThumbnailServiceImpl$1.execute(ThumbnailServiceImpl.java:423)
   at org.alfresco.repo.thumbnail.ThumbnailServiceImpl$1.execute(ThumbnailServiceImpl.java:1)
   at org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:450)
   at org.alfresco.repo.thumbnail.ThumbnailServiceImpl.createThumbnail(ThumbnailServiceImpl.java:417)
   at org.alfresco.repo.thumbnail.ThumbnailServiceImpl.createThumbnail(ThumbnailServiceImpl.java:373)
   at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
   at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.base/java.lang.reflect.Method.invoke(Method.java:566)
   at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:343)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:198)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
   at org.alfresco.repo.security.permissions.impl.AlwaysProceedMethodInterceptor.invoke(AlwaysProceedMethodInterceptor.java:41)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
   at org.alfresco.repo.security.permissions.impl.ExceptionTranslatorMethodInterceptor.invoke(ExceptionTranslatorMethodInterceptor.java:53)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
   at org.alfresco.repo.audit.AuditMethodInterceptor.invoke(AuditMethodInterceptor.java:166)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
   at org.alfresco.repo.transaction.RetryingTransactionInterceptor$1.execute(RetryingTransactionInterceptor.java:86)
   at org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:450)
   at org.alfresco.repo.transaction.RetryingTransactionInterceptor.invoke(RetryingTransactionInterceptor.java:76)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
   at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212)
   at com.sun.proxy.$Proxy146.createThumbnail(Unknown Source)
   at org.alfresco.repo.jscript.ScriptNode.createThumbnail(ScriptNode.java:3100)
   at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
   at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.base/java.lang.reflect.Method.invoke(Method.java:566)
   at org.mozilla.javascript.MemberBox.invoke(MemberBox.java:126)
   at org.mozilla.javascript.NativeJavaMethod.call(NativeJavaMethod.java:225)
   at org.mozilla.javascript.optimizer.OptRuntime.callN(OptRuntime.java:52)
   at org.mozilla.javascript.gen.classpath__alfresco_templates_webscripts_org_alfresco_repository_thumbnail_thumbnail_get_js_15._c_main_1(classpath*:alfresco/templates/webscripts/org/alfresco/repository/thumbnail/thumbnail.get.js:74)
   at org.mozilla.javascript.gen.classpath__alfresco_templates_webscripts_org_alfresco_repository_thumbnail_thumbnail_get_js_15.call(classpath*:alfresco/templates/webscripts/org/alfresco/repository/thumbnail/thumbnail.get.js)
   at org.mozilla.javascript.optimizer.OptRuntime.callName0(OptRuntime.java:74)
   at org.mozilla.javascript.gen.classpath__alfresco_templates_webscripts_org_alfresco_repository_thumbnail_thumbnail_get_js_15._c_script_0(classpath*:alfresco/templates/webscripts/org/alfresco/repository/thumbnail/thumbnail.get.js:115)
   at org.mozilla.javascript.gen.classpath__alfresco_templates_webscripts_org_alfresco_repository_thumbnail_thumbnail_get_js_15.call(classpath*:alfresco/templates/webscripts/org/alfresco/repository/thumbnail/thumbnail.get.js)
   at org.mozilla.javascript.ContextFactory.doTopCall(ContextFactory.java:405)
   at org.mozilla.javascript.ScriptRuntime.doTopCall(ScriptRuntime.java:3508)
   at org.mozilla.javascript.gen.classpath__alfresco_templates_webscripts_org_alfresco_repository_thumbnail_thumbnail_get_js_15.call(classpath*:alfresco/templates/webscripts/org/alfresco/repository/thumbnail/thumbnail.get.js)
   at org.mozilla.javascript.gen.classpath__alfresco_templates_webscripts_org_alfresco_repository_thumbnail_thumbnail_get_js_15.exec(classpath*:alfresco/templates/webscripts/org/alfresco/repository/thumbnail/thumbnail.get.js)
   at org.alfresco.repo.jscript.RhinoScriptProcessor.executeScriptImpl(RhinoScriptProcessor.java:509)
   at org.alfresco.repo.jscript.RhinoScriptProcessor.execute(RhinoScriptProcessor.java:207)
   ... 47 more
Caused by: org.alfresco.service.cmr.rendition.RenditionServiceException: 07233081 A rendition of name: {http://www.alfresco.org/model/content/1.0}pdf should have been created for source node: workspace://SpacesStore/683f95bf-17a4-48e8-99bd-cfd3fddeaca6
   at org.alfresco.repo.rendition.executer.AbstractRenderingEngine.createOrUpdateRendition(AbstractRenderingEngine.java:1015)
   at org.alfresco.repo.rendition.executer.AbstractRenderingEngine.switchToFinalRenditionNode(AbstractRenderingEngine.java:904)
   at org.alfresco.repo.rendition.executer.AbstractRenderingEngine$1.doWork(AbstractRenderingEngine.java:481)
   at org.alfresco.repo.rendition.executer.AbstractRenderingEngine$1.doWork(AbstractRenderingEngine.java:1)
   at org.alfresco.repo.security.authentication.AuthenticationUtil.runAs(AuthenticationUtil.java:623)
   at org.alfresco.repo.rendition.executer.AbstractRenderingEngine.executeImpl(AbstractRenderingEngine.java:451)
   at org.alfresco.repo.rendition.executer.AbstractRenderingEngine.executeImpl(AbstractRenderingEngine.java:394)
   at org.alfresco.repo.action.executer.ActionExecuterAbstractBase.execute(ActionExecuterAbstractBase.java:273)
   at org.alfresco.repo.action.ActionServiceImpl.directActionExecution(ActionServiceImpl.java:856)
   at org.alfresco.repo.action.ActionServiceImpl.executeActionImpl(ActionServiceImpl.java:757)
   at org.alfresco.repo.action.ActionServiceImpl.executeAction(ActionServiceImpl.java:581)
   at jdk.internal.reflect.GeneratedMethodAccessor1182.invoke(Unknown Source)
   at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.base/java.lang.reflect.Method.invoke(Method.java:566)
   at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:343)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:198)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
   at org.alfresco.repo.security.permissions.impl.AlwaysProceedMethodInterceptor.invoke(AlwaysProceedMethodInterceptor.java:41)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
   at org.alfresco.repo.security.permissions.impl.ExceptionTranslatorMethodInterceptor.invoke(ExceptionTranslatorMethodInterceptor.java:53)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
   at org.alfresco.repo.audit.AuditMethodInterceptor.invoke(AuditMethodInterceptor.java:166)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
   at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:294)
   at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:98)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
   at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212)
   at com.sun.proxy.$Proxy53.executeAction(Unknown Source)
   at org.alfresco.repo.rendition.RenditionServiceImpl.executeRenditionAction(RenditionServiceImpl.java:414)
   at org.alfresco.repo.rendition.RenditionServiceImpl.render(RenditionServiceImpl.java:276)
   at org.alfresco.repo.thumbnail.ThumbnailServiceImpl.createThumbnailNode(ThumbnailServiceImpl.java:782)
   ... 94 more

I hope someone can give me a hint to solve this problem.

Florian