java.lang.NullPointerException at org.netbeans.modules.nbform.FormEditorSupport.loadFromStreamToKit(FormEditorSupport.java:1485) at org.openide.text.DocumentOpenClose$DocumentLoad.atomicLockedRun(DocumentOpenClose.java:764) at org.openide.text.DocumentOpenClose$DocumentLoad.run(DocumentOpenClose.java:615) at org.netbeans.editor.GuardedDocument.runAtomic(GuardedDocument.java:323) at org.openide.text.NbDocument.runAtomic(NbDocument.java:436) at org.openide.text.DocumentOpenClose$DocumentLoad.run(DocumentOpenClose.java:655) at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1443) at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:68) at org.openide.util.lookup.Lookups.executeWith(Lookups.java:303) at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2058)