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Build: NetBeans IDE 6.5 Beta (Build 200808111757) VM: Java HotSpot(TM) Client VM, 10.0-b23, Java(TM) SE Runtime Environment, 1.6.0_07-b06 OS: Windows Vista, 6.0, x86 User Comments: nirkatz: updating actionmailer gem Stacktrace: java.lang.NullPointerException at javax.swing.plaf.basic.BasicProgressBarUI.sizeChanged(BasicProgressBarUI.java:955) at javax.swing.plaf.basic.BasicProgressBarUI.setAnimationIndex(BasicProgressBarUI.java:915) at com.sun.java.swing.plaf.windows.WindowsProgressBarUI.setAnimationIndex(WindowsProgressBarUI.java:190) at javax.swing.plaf.basic.BasicProgressBarUI.incrementAnimationIndex(BasicProgressBarUI.java:982) at javax.swing.plaf.basic.BasicProgressBarUI$Animator.actionPerformed(BasicProgressBarUI.java:1190) at javax.swing.Timer.fireActionPerformed(Timer.java:271)
Created attachment 70594 [details] stacktrace
probably an JDK bug
I found one report that ends on the same line, but is a bit different issue it seems http://bugs.sun.com/view_bug.do?bug_id=6726336 Anyway, I never saw and reproduced such error and without reproduction steps we can't file new issue against JDK. So closing for now, please reopen with reproducible set of steps if possible, thanks.