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This bug was originally marked as duplicate of bug 229006, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related. Build: NetBeans IDE 8.0.2 (Build 201411181905) VM: Java HotSpot(TM) Client VM, 25.45-b02, Java(TM) SE Runtime Environment, 1.8.0_45-b14 OS: Windows 7 User Comments: GUEST: NetBeans freezes Stacktrace: java.lang.IndexOutOfBoundsException: Invalid line index=28 >= lineCount=28 at org.netbeans.modules.editor.lib2.document.LineRootElement.getElement(LineRootElement.java:84) at org.netbeans.modules.editor.lib2.view.ViewBuilder.updateLine(ViewBuilder.java:1273) at org.netbeans.modules.editor.lib2.view.ViewBuilder.createNextView(ViewBuilder.java:918) at org.netbeans.modules.editor.lib2.view.ViewBuilder.createViews(ViewBuilder.java:731) at org.netbeans.modules.editor.lib2.view.ViewBuilder.createReplaceRepaintViews(ViewBuilder.java:685) at org.netbeans.modules.editor.lib2.view.ViewUpdates.updateViewsByModification(ViewUpdates.java:316)
Created attachment 153279 [details] stacktrace