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Please check stack trace below. Steps to reproduce: -Create Synchronous Sample project -DnD assign1 element to the last position in sequence -Hover mouse cursor over documentation icon. Exception will appear. The problem is in documentation button. It SHOULD NOT keep references to BPEL entities it was created for, but keep UniqueID of this entity. So, when element mutates(due to move or othe manipulation), this button will be able to access new, valid, copy of this entity. java.lang.IllegalStateException: Trying to access entity that already was deleted at org.netbeans.modules.bpel.model.impl.BpelEntityImpl.checkDeleted(BpelEntityImpl.java:575) at org.netbeans.modules.bpel.model.impl.BpelContainerImpl.getChildren(BpelContainerImpl.java:147) at org.netbeans.modules.bpel.model.impl.ExtensibleElementsImpl.getDocumentations(ExtensibleElementsImpl.java:135) at org.netbeans.modules.bpel.model.impl.ExtensibleElementsImpl.getDocumentation(ExtensibleElementsImpl.java:50) at org.netbeans.modules.bpel.documentation.DocumentationButton.getToolTipText(DocumentationButton.java:90) at javax.swing.JComponent.getToolTipText(JComponent.java:2910) at javax.swing.ToolTipManager$insideTimerAction.actionPerformed(ToolTipManager.java:649) at javax.swing.Timer.fireActionPerformed(Timer.java:271) [catch] at javax.swing.Timer$DoPostEvent.run(Timer.java:201) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209) at java.awt.EventQueue.dispatchEvent(EventQueue.java:461) at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104) at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149) at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
Changed target milestone.
The issue hasn't be fixed till 61patch1 nomination cut-off date. Marked as release61_fixes_candidate2.
fixed in trunk: 921d3bd481d9 http://hg.netbeans.org/main/rev/921d3bd481d9
reproduced in NetBeans IDE Dev (Build 20080425082446) #1729
fix is available in build >= # 1747.
verified on sierra build 1749.
The fix has been ported into the release61_fixes branch. http://hg.netbeans.org/release61_fixes/rev/2a77c0a778d6