Nullpointerexception lanching jdeveloper 10.1.2

Hi,
My jdeveloper 10.1.2 suddenly stopped working and I have no idea why. I have other versions of jdeveloper installed but this has never been a problem.
I get this error when launching jdev 10.1.2:
java.lang.NullPointerException
     at oracle.jdevimpl.vcs.oraclescm.RSCClient.registerNavigator(RSCClient.java:956)
     at oracle.jdevimpl.vcs.oraclescm.RSCClient.initializeExtension(RSCClient.java:495)
     at oracle.jdeveloper.vcs.spi.VCSAbstractExtension.initialize(VCSAbstractExtension.java:38)
     at oracle.ide.AddinManager.initializeAddin(AddinManager.java:1714)
     at oracle.ide.AddinManager.initializeAddin(AddinManager.java:1801)
     at oracle.ide.AddinManager.initializeAddins(AddinManager.java:1577)
     at oracle.ide.AddinManager.initProductAndUserAddins(AddinManager.java:443)
     at oracle.ide.IdeCore.initProductAndUserAddins(IdeCore.java:1650)
     at oracle.ide.IdeCore.startupImpl(IdeCore.java:1109)
     at oracle.ide.Ide.startup(Ide.java:539)
     at oracle.jdeveloper.JDeveloper.launch(JDeveloper.java:58)
     at oracle.jdeveloper.JDeveloper.main(JDeveloper.java:37)
any ideas???
Vh. Karin

Hi,
No, have no spaces in the install directory path. Have had jdeveloper 10.1.2 installed on my computer for over 2 years with out problems. Last week it stopped working and when I launch it I get the error.
vh. Karin

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         at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:298)
         at java.lang.Thread.run(Thread.java:595)
    ## Detail 0 ##
    java.lang.NullPointerException
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         at com.evermind.server.http.HttpRequestHandler.serveOneRequest(HttpRequestHandler.java:221)
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    Logout
    Copyright (c) 2006, Oracle. All rights reserved.

    Hi All,
    There is the issue with newly relased jdeveloper patch for 12.1. We have raised an SR with Oracle and they have responded back saying : Set profile "Sign-On:Notification" to "No" at site level, which resloves the issue.
    --Mukul                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       

  • "AWT-EventQueue-0" java.lang.NullPointerException and JInternalFrame

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    Some possibly helpful suggestions:
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    2) Get rid of GUII. The GUI constructor will do all this and more.
    3) Get rid of startFrame and startFrame2.
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    I have just had this same exception. The first project within the workspace worked fine, the second workspace had the exception. I've used this wizard several times before with success. I'm using 10.1.3.0.4 (SU5)
    The "Model" project which worked has the following technology scopes:
    Ant
    Database
    EJB
    Java
    TopLink
    UML
    The "User Interface" project which did not work has the following technology scopes:
    Java
    JSF
    JSP and Servlets
    1. Any ideas on what I can do to work around this problem?
    2. How can I help you debug this issue?
    thanks,
    chas

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