Error on Workbench - Startup

Hi,

I get the following error on Workbench-startup " An error was encountered while trying to reference the local workspace. Repository Viewing inhibited."

What went wrong?

This is the ouput of the workbench - log:

!ENTRY com.adobe.repository.ui.eclipse.forms 4 0 2008-02-18 10:41:32.591
!MESSAGE Exception:
!STACK 0
java.lang.IllegalStateException
at com.adobe.ide.singlesignon.IDESession.getProject(Unknown Source)
at com.adobe.ide.singlesignon.IDESession.getProject(Unknown Source)
at com.adobe.repository.ui.eclipse.views.RepositoryView.userLoggedIn(RepositoryView.java:380 )
at com.adobe.repository.ui.eclipse.views.RepositoryView$1.run(RepositoryView.java:277)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:123)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3325)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2971)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1914)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1878)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:419)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at com.adobe.lcide.rcp.Application.run(Unknown Source)
at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:78)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLau ncher.java:92)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.jav a:68)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:177)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336)
at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
at org.eclipse.core.launcher.Main.run(Main.java:977)
at org.eclipse.core.launcher.Main.main(Main.java:952)
Caused by: org.eclipse.core.internal.resources.ResourceException: The project description file (.project) for adobe-vpc is missing. This file contains important information about the project. The project will not function properly until this file is restored.
at org.eclipse.core.internal.localstore.FileSystemResourceManager.read(FileSystemResourceMan ager.java:656)
at org.eclipse.core.internal.resources.SaveManager.restoreMetaInfo(SaveManager.java:765)
at org.eclipse.core.internal.resources.SaveManager.restore(SaveManager.java:672)
at org.eclipse.core.internal.resources.Project.open(Project.java:845)
at org.eclipse.core.internal.resources.Project.open(Project.java:883)
... 26 more

regards
Johannes