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This problem is very old since version 6.5. It is freezing again when I double click on one simple Panel. It shows the Palette window that says "loading...", but Netbeans does not work anymore and I have to close the application using the "Task Manager". Nothing is written to the log file. I tried to recompile the whole project and to view a simple panel that does not use any of my components. It freezes even so. When I remove the folder "MyTools" from the path "\.netbeans\6.9\config\FormDesignerPalette" and restart Netbeans it works normally when I try to use the GuiBuilder. This feature is the most important for me. I need to use my own components on the GuiBuilder through the "Palette Window". Since version 6.5 I have sometimes problems with this issue. It was working before the last update I made this week. Thanks! Product Version = NetBeans IDE 6.9.1 (Build 201011082200) Operating System = Windows 7 version 6.1 running on x86 Java; VM; Vendor = 1.6.0_22 Runtime = Java HotSpot(TM) Client VM 17.1-b03
> Since version 6.5 I have sometimes problems with this issue. > It was working before the last update I made this week. I have no idea what problems you were facing in the past, but the freezes that you experience now are caused by a temporary bug in JDK, see issue 187697. The mentioned bug is present in JDK 6 update 21 and 22. You can either downgrade your JDK to update 20 or use early access builds of update 23 available at http://download.java.net/jdk6/ *** This bug has been marked as a duplicate of bug 187697 ***