ZK - Open Source Ajax Java Framework

Hi,

I started from scratch, installed Helios(Eclipse) new,
installed ZK Studio.

When I start the first Project, I get this message.

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An internal error occurred during: "associate library source".
org.eclipse.jdt.internal.ui.wizards.buildpaths.BuildPathSupport.modifyClasspathEntry(Lorg/eclipse/swt/widgets/Shell;Lorg/eclipse/jdt/core/IClasspathEntry;[Ljava/lang/String;Lorg/eclipse/jdt/core/IJavaProject;Lorg/eclipse/core/runtime/IPath;Lorg/eclipse/core/runtime/IProgressMonitor;)V

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Would could be the cause / how to proceed

Hi,

I moved back to Eclipse Galileo 3.5
with this version, it works.

This means, Helios + ZK does not work together (actual)