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This bug was originally marked as duplicate of bug 196553, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related. Build: NetBeans IDE Dev (Build 20120905-f70331372981) VM: Java HotSpot(TM) 64-Bit Server VM, 23.3-b01, Java(TM) SE Runtime Environment, 1.7.0_07-b10 OS: Linux User Comments: GUEST: Debugging to wrong remote host. GUEST: debugging narve: Debugging my Swing GUI phill84: deploying a webapp in tomcat GUEST: was viewing variables and then stopped debugging GUEST: simply stopped debugging now -.- dkonecny: debugging js GUEST: fast single stepping during debug session GUEST: Hi, during a "Clean and build" the system showed me this problem... fortunately it hasn't crush the system. GUEST: Don't know exactly when the problem occured. milinkp: I dont know when its comes.. Its happened when i try to execute the program , GUEST: debuging artisan: This happens once in while during testing. Don't know to reproduce. GUEST: Stop debug program and see problem. GUEST: Debuging web application GUEST: I was debugging and clicked the "STOP"-button when this error occured GUEST: debugging a test mmirilovic: Switch to Loaded classes GUEST: trying to debug .. debug failing to stop at breakpoints artisan: running a unit test GUEST: Noticed this after debugging my program GUEST: stopped debugging Stacktrace: java.lang.NullPointerException: Null child at index 0, parent: Root, model: org.netbeans.spi.viewmodel.Models$CompoundModel@1a873070 TreeModel = org.netbeans.spi.viewmodel.Models$DelegatingTreeModel@402f71b7 org.netbeans.modules.web.javascript.debugger.annotation.ToolTipModel@376b6a01 NodeModel = org.netbeans.modules.web.javascript.debugger.annotation.ToolTipModel@376b6a01 TableModel = org.netbeans.spi.viewmodel.Models$DelegatingTableModel@50a6db59 org.netbeans.modules.web.javascript.debugger.annotation.ToolTipModel@376b6a01 NodeActionsProvider = org.netbeans.spi.viewmodel.Models$DelegatingNodeActionsProvider@6ad2c64c ColumnsModel = [org.netbeans.modules.debugger.ui.models.ColumnModels$AbstractColumn@58944820, org.netbeans.modules.debugger.ui.models.ColumnModels$AbstractColumn@6f0b5a4e, org.netbeans.modules.debugger.ui.models.ColumnModels$AbstractColumn@5255efd6, org.netbeans.modules.debugger.ui.models.ColumnModels$AbstractColumn@7f4f4d5] All children are: [null] at org.netbeans.modules.viewmodel.TreeModelNode$TreeModelChildren.applyChildren(TreeModelNode.java:1536) at org.netbeans.modules.viewmodel.TreeModelNode$TreeModelChildren.refreshLazyChildren(TreeModelNode.java:1513) at org.netbeans.modules.viewmodel.TreeModelNode$TreeModelChildren.refreshChildren(TreeModelNode.java:1368) at org.netbeans.modules.viewmodel.TreeModelNode.refreshTheChildren(TreeModelNode.java:975) at org.netbeans.modules.viewmodel.TreeModelNode.refreshTheChildren(TreeModelNode.java:958) at org.netbeans.modules.viewmodel.TreeModelNode$5.run(TreeModelNode.java:592)
Created attachment 123970 [details] stacktrace
Fixed by changeset: 232477:af524cbd95d2 http://hg.netbeans.org/web-main/rev/af524cbd95d2
Integrated into 'main-golden', will be available in build *201209110001* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress) Changeset: http://hg.netbeans.org/main-golden/rev/af524cbd95d2 User: mentlicher@netbeans.org Log: #217921: Prevent from providing a null child.
*** Bug 202366 has been marked as a duplicate of this bug. ***