problem setting up CloverGUI

for the previous version of the Clover GUI i just downloaded the prepackaged version with eclipse. this time it was not an option so i installed GEF into a new copy of eclipse 3.1.2 and then installed the cloverGUI. i created a new workspace and project, added tools.jar, the engine, cloveretl-commons, and everything in the lib folders to the build path. but when i create a new graph it gets stuck trying to open the graph editor in the log file i get this error:


!ENTRY org.eclipse.ui 4 4 2007-08-17 15:16:18.738
!MESSAGE Unhandled event loop exception

!ENTRY org.eclipse.ui 4 0 2007-08-17 15:16:18.738
!MESSAGE org.eclipse.gef.palette.CombinedTemplateCreationEntry: method <init>(Ljava/lang/String;Ljava/lang/String;Lorg/eclipse/gef/requests/CreationFactory;Lorg/eclipse/jface/resource/ImageDescriptor;Lorg/eclipse/jface/resource/ImageDescriptor;)V not found
!STACK 0
java.lang.NoSuchMethodError: org.eclipse.gef.palette.CombinedTemplateCreationEntry: method <init>(Ljava/lang/String;Ljava/lang/String;Lorg/eclipse/gef/requests/CreationFactory;Lorg/eclipse/jface/resource/ImageDescriptor;Lorg/eclipse/jface/resource/ImageDescriptor;)V not found
at cz.opentech.cloveretl.gui.graph.G.o00000(Unknown Source)
at cz.opentech.cloveretl.gui.graph.G.Ã’00000(Unknown Source)
at cz.opentech.cloveretl.gui.editors.GraphEditor.getPaletteRoot(Unknown Source)
at org.eclipse.gef.ui.parts.GraphicalEditorWithFlyoutPalette.setEditDomain(GraphicalEditorWithFlyoutPalette.java:137)
at cz.opentech.cloveretl.gui.editors.GraphEditor.<init>(Unknown Source)
at sun.reflect.GeneratedConstructorAccessor7.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at java.lang.Class.newInstance0(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
....(more)