problem starting Alfresco Labs 3

[b3zra1y]

I've successfully downloaded and installed Alfresco Labs 3 (on Windows XP Professional, Service Pack 3).
However, when I run:  Programs > Alfresco Labs > Alfresco Share
… I get the following error.  Can anyone help ?  

HTTP Status 500 -
——————————————————————————–
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: Error during dispatch: A page rendering problem was not able to be handled by the framework
   org.alfresco.web.site.servlet.DispatcherServlet.service(DispatcherServlet.java:185)
   javax.servlet.http.HttpServlet.service(HttpServlet.java:803)

root cause
org.alfresco.web.site.exception.RequestDispatchException: A page rendering problem was not able to be handled by the framework
   org.alfresco.web.site.PresentationUtil.handlePageRenderProblem(PresentationUtil.java:234)
   org.alfresco.web.site.PresentationUtil.renderPage(PresentationUtil.java:92)
   org.alfresco.web.site.servlet.DispatcherServlet.dispatchPage(DispatcherServlet.java:455)
   org.alfresco.web.site.servlet.DispatcherServlet.dispatch(DispatcherServlet.java:356)
   org.alfresco.web.site.servlet.DispatcherServlet.service(DispatcherServlet.java:144)
   javax.servlet.http.HttpServlet.service(HttpServlet.java:803)

root cause
org.alfresco.web.site.exception.RequestDispatchException: Failed to render the error handler page 'page-error' for renderer: /core/page-error.jsp of type: jsp
   org.alfresco.web.site.RenderUtil.renderErrorHandlerPage(RenderUtil.java:916)
   org.alfresco.web.site.PresentationUtil.handlePageRenderProblem(PresentationUtil.java:228)
   org.alfresco.web.site.PresentationUtil.renderPage(PresentationUtil.java:92)
   org.alfresco.web.site.servlet.DispatcherServlet.dispatchPage(DispatcherServlet.java:455)
   org.alfresco.web.site.servlet.DispatcherServlet.dispatch(DispatcherServlet.java:356)
   org.alfresco.web.site.servlet.DispatcherServlet.service(DispatcherServlet.java:144)
   javax.servlet.http.HttpServlet.service(HttpServlet.java:803)

root cause
org.alfresco.web.site.exception.RendererExecutionException: Unable to execute JSP include: /core/page-error.jsp
   org.alfresco.web.site.renderer.JSPRenderer.execute(JSPRenderer.java:142)
   org.alfresco.web.site.RenderUtil.executeRenderer(RenderUtil.java:869)
   org.alfresco.web.site.RenderUtil.renderErrorHandlerPage(RenderUtil.java:912)
   org.alfresco.web.site.PresentationUtil.handlePageRenderProblem(PresentationUtil.java:228)
   org.alfresco.web.site.PresentationUtil.renderPage(PresentationUtil.java:92)
   org.alfresco.web.site.servlet.DispatcherServlet.dispatchPage(DispatcherServlet.java:455)
   org.alfresco.web.site.servlet.DispatcherServlet.dispatch(DispatcherServlet.java:356)
   org.alfresco.web.site.servlet.DispatcherServlet.service(DispatcherServlet.java:144)
   javax.servlet.http.HttpServlet.service(HttpServlet.java:803)

root cause
javax.servlet.ServletException: Unable to compile class for JSP
   org.alfresco.web.site.RequestUtil.include(RequestUtil.java:145)
   org.alfresco.web.site.renderer.JSPRenderer.execute(JSPRenderer.java:136)
   org.alfresco.web.site.RenderUtil.executeRenderer(RenderUtil.java:869)
   org.alfresco.web.site.RenderUtil.renderErrorHandlerPage(RenderUtil.java:912)
   org.alfresco.web.site.PresentationUtil.handlePageRenderProblem(PresentationUtil.java:228)
   org.alfresco.web.site.PresentationUtil.renderPage(PresentationUtil.java:92)
   org.alfresco.web.site.servlet.DispatcherServlet.dispatchPage(DispatcherServlet.java:455)
   org.alfresco.web.site.servlet.DispatcherServlet.dispatch(DispatcherServlet.java:356)
   org.alfresco.web.site.servlet.DispatcherServlet.service(DispatcherServlet.java:144)
   javax.servlet.http.HttpServlet.service(HttpServlet.java:803)

root cause
org.apache.jasper.JasperException: Unable to compile class for JSP
   org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:573)
   org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:299)
   org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:315)
   org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
   javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
   org.alfresco.web.site.RequestUtil.include(RequestUtil.java:141)
   org.alfresco.web.site.renderer.JSPRenderer.execute(JSPRenderer.java:136)
   org.alfresco.web.site.RenderUtil.executeRenderer(RenderUtil.java:869)
   org.alfresco.web.site.RenderUtil.renderErrorHandlerPage(RenderUtil.java:912)
   org.alfresco.web.site.PresentationUtil.handlePageRenderProblem(PresentationUtil.java:228)
   org.alfresco.web.site.PresentationUtil.renderPage(PresentationUtil.java:92)
   org.alfresco.web.site.servlet.DispatcherServlet.dispatchPage(DispatcherServlet.java:455)
   org.alfresco.web.site.servlet.DispatcherServlet.dispatch(DispatcherServlet.java:356)
   org.alfresco.web.site.servlet.DispatcherServlet.service(DispatcherServlet.java:144)
   javax.servlet.http.HttpServlet.service(HttpServlet.java:803)

root cause
java.io.IOException: tmpFile.renameTo(classFile) failed
   org.apache.jasper.compiler.SmapUtil$SDEInstaller.install(SmapUtil.java:246)
   org.apache.jasper.compiler.SmapUtil.installSmap(SmapUtil.java:165)
   org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:450)
   org.apache.jasper.compiler.Compiler.compile(Compiler.java:298)
   org.apache.jasper.compiler.Compiler.compile(Compiler.java:277)
   org.apache.jasper.compiler.Compiler.compile(Compiler.java:265)
   org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:564)
   org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:299)
   org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:315)
   org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
   javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
   org.alfresco.web.site.RequestUtil.include(RequestUtil.java:141)
   org.alfresco.web.site.renderer.JSPRenderer.execute(JSPRenderer.java:136)
   org.alfresco.web.site.RenderUtil.executeRenderer(RenderUtil.java:869)
   org.alfresco.web.site.RenderUtil.renderErrorHandlerPage(RenderUtil.java:912)
   org.alfresco.web.site.PresentationUtil.handlePageRenderProblem(PresentationUtil.java:228)
   org.alfresco.web.site.PresentationUtil.renderPage(PresentationUtil.java:92)
   org.alfresco.web.site.servlet.DispatcherServlet.dispatchPage(DispatcherServlet.java:455)
   org.alfresco.web.site.servlet.DispatcherServlet.dispatch(DispatcherServlet.java:356)
   org.alfresco.web.site.servlet.DispatcherServlet.service(DispatcherServlet.java:144)
   javax.servlet.http.HttpServlet.service(HttpServlet.java:803)

note The full stack trace of the root cause is available in the Apache Tomcat/5.5.23 logs.
Apache Tomcat/5.5.23

[skontopo]

I have exactly the same problem and I can't find out the cause…
I have installed Alfresco Labs 3 on two different machines for the first time and both installations have the same problem…  :?

EDIT:
I think I figured out a solution: There is a problem when there are multiple JDKs or JREs in the PC where the installation is taking place.
I uninstalled ALL JDKs and JREs and installed the latest JDK and everything is fine!
Also, when you install the "full" version (JDK included) it helps if you have no other JDK present on the target machine…  :?
Another solution that worked for me is to set the correct JAVA_HOME path in your system environment variables as well as inside the "SetPaths.bat" file in the Alfresco folder.