Failure to Descend

[David B. Held]

Since Thunderbird threaded my last post into a 3-month old thread, I'm 
trying again with an error message.  I'm trying to use Descent, but when 
I open a D file, I get:

java.lang.IllegalArgumentException: Group not found: group.information
	at 
org.eclipse.jface.action.ContributionManager.addToGroup(ContributionManager.java:124)
	at 
org.eclipse.jface.action.ContributionManager.appendToGroup(ContributionManager.java:138)
	at 
org.eclipse.jface.action.SubContributionManager.appendToGroup(SubContributionManager.java:84)
	at 
org.eclipse.jface.action.SubContributionManager.appendToGroup(SubContributionManager.java:74)
	at 
descent.internal.ui.javaeditor.BasicJavaEditorActionContributor.contributeToMenu(BasicJavaEditorActionContributor.java:155)
	at 
descent.internal.ui.javaeditor.BasicCompilationUnitEditorActionContributor.contributeToMenu(BasicCompilationUnitEditorActionContributor.java:99)
	at 
descent.internal.ui.javaeditor.CompilationUnitEditorActionContributor.contributeToMenu(CompilationUnitEditorActionContributor.java:47)
	at 
org.eclipse.ui.part.EditorActionBarContributor.init(EditorActionBarContributor.java:167)
	at 
org.eclipse.ui.part.EditorActionBarContributor.init(EditorActionBarContributor.java:146)
	at 
descent.internal.ui.javaeditor.BasicJavaEditorActionContributor.init(BasicJavaEditorActionContributor.java:130)
	at 
descent.internal.ui.javaeditor.BasicCompilationUnitEditorActionContributor.init(BasicCompilationUnitEditorActionContributor.java:175)

Any ideas?

Dave