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This bug was originally marked as duplicate of bug 212953, 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 Beta (Build 201401141042) VM: Java HotSpot(TM) 64-Bit Server VM, 25.0-b67, Java(TM) SE Runtime Environment, 1.8.0-b126 OS: Linux User Comments: GUEST: design lost Stacktrace: java.lang.NullPointerException at org.netbeans.modules.form.layoutdesign.VisualState.updateCurrentSpaceOfComponents(VisualState.java:120) at org.netbeans.modules.form.layoutdesign.LayoutDesigner.updateContainerAfterBuild(LayoutDesigner.java:3567) at org.netbeans.modules.form.layoutdesign.LayoutDesigner.updateCurrentState(LayoutDesigner.java:359) at org.netbeans.modules.form.layoutdesign.LayoutDesigner.updateCurrentState(LayoutDesigner.java:205) at org.netbeans.modules.form.FormDesigner.updateComponentLayer(FormDesigner.java:641) at org.netbeans.modules.form.FormDesigner.access$2200(FormDesigner.java:103)
Created attachment 145383 [details] stacktrace
The original exception (found in the attached log file) that caused the reported one looks like the same problem fixed recently as bug 127881. java.lang.NullPointerException at org.jdesktop.swingx.JXSearchField.customSetUIProperty(JXSearchField.java:751) at org.jdesktop.swingx.JXSearchField.customSetUIProperty(JXSearchField.java:729) at org.jdesktop.swingx.plaf.SearchFieldUI.installDefaults(SearchFieldUI.java:217) at org.jdesktop.swingx.plaf.SearchFieldUI.installUI(SearchFieldUI.java:73) at javax.swing.JComponent.setUI(JComponent.java:663) at javax.swing.text.JTextComponent.setUI(JTextComponent.java:330) at org.jdesktop.swingx.plaf.TextUIWrapper.replaceUIIfNeeded(TextUIWrapper.java:67) at org.jdesktop.swingx.plaf.TextUIWrapper$DefaultWrapper.replaceUIIfNeeded(TextUIWrapper.java:159) at org.jdesktop.swingx.plaf.TextUIWrapper.install(TextUIWrapper.java:49) at org.jdesktop.swingx.prompt.PromptSupport.setPrompt(PromptSupport.java:180) at org.jdesktop.swingx.prompt.PromptSupport.init(PromptSupport.java:114) at org.jdesktop.swingx.JXTextField.<init>(JXTextField.java:38) at org.jdesktop.swingx.JXTextField.<init>(JXTextField.java:33) at org.jdesktop.swingx.JXTextField.<init>(JXTextField.java:29) at org.jdesktop.swingx.JXSearchField.<init>(JXSearchField.java:174) at org.jdesktop.swingx.JXSearchField.<init>(JXSearchField.java:164) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:408) at java.lang.Class.newInstance(Class.java:433) at org.netbeans.modules.form.CreationFactory.createDefaultInstance(CreationFactory.java:178) at org.netbeans.modules.form.RADComponent.createBeanInstance(RADComponent.java:252) [catch] at org.netbeans.modules.form.RADComponent.cloneBeanInstance(RADComponent.java:421) at org.netbeans.modules.form.VisualReplicator.cloneComponent(VisualReplicator.java:766) ... *** This bug has been marked as a duplicate of bug 127881 ***