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This issue was reported manually by vv159170. It already has 2 duplicates Build: NetBeans IDE 7.0 Beta 2 (Build 201102140001) VM: OpenJDK 64-Bit Server VM, 19.0-b09, OpenJDK Runtime Environment, 1.6.0_20-b20 OS: Linux User Comments: GUEST: Options->Editor->Formatting Setting Tab Size to 4 then clicked OK. It looks like the Language combo box went blank. GUEST: Tools->Options->Editor->Formatting Setting tab size to 4 from 8. The Language combo box always reverts to nil (eg no languages to select) when clicking OK. Stacktrace: java.lang.IllegalArgumentException: input list [] doesn't contain default element: at org.netbeans.modules.cnd.utils.MIMEExtensions.setExtensions(MIMEExtensions.java:145) at org.netbeans.modules.cnd.ui.options.CndOtherOptionsPanel$ExtensionsElements.apply(CndOtherOptionsPanel.java:310) at org.netbeans.modules.cnd.ui.options.CndOtherOptionsPanel.applyChanges(CndOtherOptionsPanel.java:85) at org.netbeans.modules.cnd.ui.options.CndOtherOptionsPanelController.applyChanges(CndOtherOptionsPanelController.java:71) at org.netbeans.modules.options.TabbedController.applyChanges(TabbedController.java:130) at org.netbeans.modules.options.CategoryModel$Category.applyChanges(CategoryModel.java:390)
Created attachment 106373 [details] stacktrace
http://hg.netbeans.org/cnd-main/rev/e034ed7ebf6d
Integrated into 'main-golden', will be available in build *201102260001* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress) Changeset: http://hg.netbeans.org/main/rev/e034ed7ebf6d User: Vladimir Voskresensky <vv159170@netbeans.org> Log: fixed #195901 - IllegalArgumentException: input list [] doesn't contain default element: