Create a Slide Library from MS Powerpoint 2007 - can Alfresco do that?

[efestione]

Hi all,
I am on Alfresco 4.2.c and I am trying to create a <strong>Slide Library</strong> from MS Powepoint 2007 (using the function Publish Slides) through the SharePoint Protocol Support.

I always get the dialog showing the error "Impossible to access http://myhost:7070/alfresco. The path doesn't exist or you don't have permission to use this resource" (I am traslating from italian).

But I can confirm that the SharePoint Protocol is working because I created two shared spaces (both from MS Outlook and MS Word) without problems.

I do not have any other log to attach.

Can you help me to find the problem?

Thank you
Alex

edit: the log of this error is:

19:23:30,584 WARN  [org.alfresco.module.vti.web.actions.VtiSoapAction] Failure executing Vti request
org.alfresco.module.vti.handler.VtiHandlerException: The provided URL is invalid.
   at org.alfresco.module.vti.handler.alfresco.VtiPathHelper.doDecomposeURLWork(VtiPathHelper.java:365)
   at org.alfresco.module.vti.handler.alfresco.VtiPathHelper$1.doWork(VtiPathHelper.java:341)
   at org.alfresco.module.vti.handler.alfresco.VtiPathHelper$1.doWork(VtiPathHelper.java:338)
   at org.alfresco.repo.security.authentication.AuthenticationUtil.runAs(AuthenticationUtil.java:529)
   at org.alfresco.module.vti.handler.alfresco.VtiPathHelper.decomposeDocumentURL(VtiPathHelper.java:337)
   at org.alfresco.module.vti.handler.alfresco.AlfrescoMethodHandler.decomposeURL(AlfrescoMethodHandler.java:145)
   at sun.reflect.GeneratedMethodAccessor771.invoke(Unknown Source)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:601)
   at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:309)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
   at org.springframework.aop.framework.adapter.ThrowsAdviceInterceptor.invoke(ThrowsAdviceInterceptor.java:124)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
   at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
   at $Proxy135.decomposeURL(Unknown Source)
   at org.alfresco.module.vti.web.ws.WebUrlFromPageUrlEndpoint.execute(WebUrlFromPageUrlEndpoint.java:83)
   at org.alfresco.module.vti.web.actions.VtiSoapAction.execute(VtiSoapAction.java:84)
   at org.alfresco.module.vti.web.VtiRequestDispatcher.executeAction(VtiRequestDispatcher.java:257)
   at org.alfresco.module.vti.web.VtiRequestDispatcher.doActions(VtiRequestDispatcher.java:230)
   at org.alfresco.module.vti.web.VtiRequestDispatcher.service(VtiRequestDispatcher.java:148)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
   at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
   at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1221)
   at org.alfresco.module.vti.web.VtiFilter.doFilter(VtiFilter.java:188)
   at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
   at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:399)
   at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
   at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766)
   at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
   at org.mortbay.jetty.Server.handle(Server.java:326)
   at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
   at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:945)
   at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:756)
   at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218)
   at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
   at org.mortbay.jetty.bio.SocketConnector$Connection.run(SocketConnector.java:228)
   at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
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[efestione]

Just a quick update. I found that in order to be able to publish slides from MS Powerpoint you must first create a particular type of site in SharePoint: http://office.microsoft.com/en-us/sharepoint-server-help/create-a-slide-library-HA010174117.aspx

Does Alfresco support that type of site?