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This bug was originally marked as duplicate of bug 138202, 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 201005040200) VM: Java HotSpot(TM) 64-Bit Server VM, 16.3-b01, Java(TM) SE Runtime Environment, 1.6.0_20-b02 OS: Windows 7 User Comments: GUEST: unknown GUEST: Clicking on the empty space in the "Files" Tab triggers this error. rdion: Nothing special; I noticed that the Tree was not painted properly. swpalmer: clicked in empty space in Projects panel GUEST: Just browsing though my code... GUEST: I was closing open tabs (about 8 in total probably) using CTRL+W. Open tabs were .php and .phtml files, Stacktrace: java.lang.NullPointerException at javax.swing.plaf.basic.BasicTreeUI$Handler.isActualPath(BasicTreeUI.java:3421) at javax.swing.plaf.basic.BasicTreeUI$Handler.mouseReleasedDND(BasicTreeUI.java:3589) at javax.swing.plaf.basic.BasicTreeUI$Handler.mouseReleased(BasicTreeUI.java:3562) at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:273) at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:272) at java.awt.Component.processMouseEvent(Component.java:6263)
Created attachment 98596 [details] stacktrace
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6505523
*** This bug has been marked as a duplicate of bug 196006 ***