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-create new PU in ejb module -create new entity class -create new MDB -close PU - press Discard in "Save" dialog (issue 73530) => java.lang.IllegalStateException: BaseDocument.write() at org.openide.text.CloneableEditorSupport.getInputStream(CloneableEdito rSupport.java:1245) at org.netbeans.modules.xml.multiview.XmlMultiViewEditorSupport.getInput Stream(XmlMultiViewEditorSupport.java:148) at org.netbeans.modules.j2ee.persistence.unit.PUDataObject.parseDocument (PUDataObject.java:88) ...
Created attachment 29219 [details] thrown exception
Seems to be fixed, possibly by fix for issue 74073.
Didn't see it for a long time too.