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Possible Duplicate:
CreateProcess error=206, The filename or extension is too long when running main() method

Using Eclipse (Indigo for Java EE), when I clean all projects (to compile them again) I get the following error :

'DataNucleus Enhancer' has encountered a problem Cannot run program "C:\jdk7\bin\javaw.exe" (in directory "C:\0-MS"): CreateProcess error=206, Nom de fichier ou extension trop long (==> in english : the filename or extension is too long)

As you can see, I tried using the shortest path possible, but Eclipse still says the same thing. One similiar problem reported talks about configuring the ORM (using Google App Engine) but I think this is a different problem.

Anyone know why this is happening?

Here is the LOG : 

!ENTRY com.google.appengine.eclipse.core 4 0 2012-06-26 08:17:23.137
!MESSAGE Cannot run program "C:\jdk7\bin\javaw.exe" (in directory "C:\0-MS"): CreateProcess error=206, Nom de fichier ou extension trop long
!STACK 0
java.io.IOException: Cannot run program "C:\jdk7\bin\javaw.exe" (in directory "C:\0-MS"): CreateProcess error=206, Nom de fichier ou extension trop long
    at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029)
    at com.google.gdt.eclipse.core.ProcessUtilities.launchProcessAndActivateOnError(ProcessUtilities.java:213)
    at com.google.appengine.eclipse.core.orm.enhancement.EnhancerJob.runInWorkspace(EnhancerJob.java:106)
    at org.eclipse.core.internal.resources.InternalWorkspaceJob.run(InternalWorkspaceJob.java:38)
    at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
Caused by: java.io.IOException: CreateProcess error=206, Nom de fichier ou extension trop long
    at java.lang.ProcessImpl.create(Native Method)
    at java.lang.ProcessImpl.<init>(ProcessImpl.java:188)
    at java.lang.ProcessImpl.start(ProcessImpl.java:132)
    at java.lang.ProcessBuilder.start(ProcessBuilder.java:1021)
    ... 4 more

Here is the project command line

-startupUrl MananaSeguro.html -war C:\0-MS\war -remoteUI "${gwt_remote_ui_server_port}:${unique_id}" -logLevel INFO -codeServerPort 9997 -port 8888 -server com.google.appengine.tools.development.gwt.AppEngine

The VM arguments

-Xmx512m -javaagent:C:\shortGAE-1.6.4\lib\agent\appengine-agent.jar -XX:-UseSplitVerifier

And the ORM properties (App Engine), there is just one folder :

src/

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  • I think i've seen this before but I can't remember. Is there any full log for such error? It would be helpful to trace the problem – vandershraaf Jun 27 '12 at 15:53
  • It's probably complaining about one of the files that is a parameter to the Java compilation or run request. Eclipse directories tend to get long and tedious, and you encounter this problem fairly regularly. (One of many reasons I don't care that much for Eclipse.) – Hot Licks Jun 27 '12 at 16:19
  • I added the log, I do not know if it is enought... –  Jun 28 '12 at 20:04
  • It's not the filename that's too long, but the whole command line. – Marko Topolnik Jun 28 '12 at 20:16
  • I am sorry, I forgot (it is now precised in the question), 'DataNucleus Enhancer' has encountered a problem. I also added the command line of the project and the ORM property (because I have seen in another post that it could be the problem. In my src/ directory, I have the resource directory that contains images etc...but not some too long filename). –  Jun 29 '12 at 14:50
  • Ok, THE WHOLE COMMAND LINE IS : -startupUrl MananaSeguro.html -war C:\0-MS\war -remoteUI "${gwt_remote_ui_server_port}:${unique_id}" -logLevel INFO -codeServerPort 9997 -port 8888 -server com.google.appengine.tools.development.gwt.AppEngineLauncher com.mananaseguro.MananaSeguro –  Jun 30 '12 at 12:15
  • The only suggestion that I have is to make sure your workspace is a short directory like C:\wksp (for Windows). The Windows default is a rather long directory name with embedded spaces. – Gilbert Le Blanc Jul 02 '12 at 15:09

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