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Not sure what behavior this is associated with, if any, but here’s an error from my logs:
!ENTRY org.eclipse.ui 4 0 2009-08-04 09:23:02.759
!MESSAGE Unhandled event loop exception
!STACK 0
java.lang.ClassCastException: org.topcased.modeler.edit.GraphEdgeEditPart cannot be cast to org.topcased.modeler.uml.sequencediagram.edit.MessageEditPart
at org.topcased.modeler.uml.sequencediagram.edit.BehaviorExecutionSpecificationEditPart.getSourceConnectionAnchor(BehaviorExecutionSpecificationEditPart.java:203)
at org.eclipse.gef.editpolicies.ConnectionEndpointEditPolicy.showConnectionMoveFeedback(ConnectionEndpointEditPolicy.java:198)
at com.genuitec.eclipse.modeling.policy.ModelerConnectionEndpointEditPolicy.showSourceFeedback(ModelerConnectionEndpointEditPolicy.java:46)
at org.eclipse.gef.editparts.AbstractEditPart.showSourceFeedback(AbstractEditPart.java:974)
at org.eclipse.gef.tools.ConnectionEndpointTracker.showSourceFeedback(ConnectionEndpointTracker.java:319)
at org.eclipse.gef.tools.ConnectionEndpointTracker.handleDragInProgress(ConnectionEndpointTracker.java:176)
at org.eclipse.gef.tools.AbstractTool.mouseDrag(AbstractTool.java:994)
at org.eclipse.gef.tools.SelectionTool.mouseDrag(SelectionTool.java:511)
at org.eclipse.gef.EditDomain.mouseDrag(EditDomain.java:230)
at org.eclipse.gef.ui.parts.DomainEventDispatcher.dispatchMouseMoved(DomainEventDispatcher.java:357)
at org.eclipse.draw2d.LightweightSystem$EventHandler.mouseMove(LightweightSystem.java:533)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:199)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1003)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3823)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3422)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2384)damonfeldman,
I have replied to your post at
https://www.genuitec.com/forums/topic/unable-to-open-uml-diagram/#post-301143
