java.io.IOException: java.lang.UnsupportedOperationException: Error in data
system. Please reopen the bug #17014 with the following message: 
  DataLoader:org.netbeans.modules.j2ee.deployment.config.ConfigDataLoader
  DataObject:org.netbeans.modules.j2ee.deployment.config.SecondaryConfigDataObject@3d58b2[MasterFileObject@91cc3a[file:/home.local/blaha/testing/Module1Ejb/src/conf/sun-cmp-mappings.xml]]
  PrimaryEntry:org.openide.loaders.FileEntry@91cc3a
  PrimaryFile:MasterFileObject@91cc3a[file:/home.local/blaha/testing/Module1Ejb/src/conf/sun-cmp-mappings.xml]
  SecondaryFile:AbstractFileObject@1f3329a[jar:file:/home.local/blaha/testing/Module1Ejb/dist/Module1Ejb.jar!/META-INF/sun-cmp-mappings.xml]
	at org.openide.loaders.DataLoader.findDataObject(DataLoader.java:360)
	at
org.openide.loaders.DataLoaderPool.findDataObject(DataLoaderPool.java:378)
	at org.openide.loaders.FolderList.createBoth(FolderList.java:698)
	at org.openide.loaders.FolderList.getObjects(FolderList.java:509)
	at org.openide.loaders.FolderList.access$200(FolderList.java:50)
	at org.openide.loaders.FolderList$ListTask.run(FolderList.java:877)
	at org.openide.util.Task.run(Task.java:189)
	at
org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:330)
[catch] at
org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:721)
==>
java.lang.UnsupportedOperationException: Error in data system. Please reopen
the bug #17014 with the following message: 
  DataLoader:org.netbeans.modules.j2ee.deployment.config.ConfigDataLoader
  DataObject:org.netbeans.modules.j2ee.deployment.config.SecondaryConfigDataObject@3d58b2[MasterFileObject@91cc3a[file:/home.local/blaha/testing/Module1Ejb/src/conf/sun-cmp-mappings.xml]]
  PrimaryEntry:org.openide.loaders.FileEntry@91cc3a
  PrimaryFile:MasterFileObject@91cc3a[file:/home.local/blaha/testing/Module1Ejb/src/conf/sun-cmp-mappings.xml]
  SecondaryFile:AbstractFileObject@1f3329a[jar:file:/home.local/blaha/testing/Module1Ejb/dist/Module1Ejb.jar!/META-INF/sun-cmp-mappings.xml]
	at
org.openide.loaders.UniFileLoader.createSecondaryEntry(UniFileLoader.java:109)
	at
org.openide.loaders.MultiFileLoader.createSecondaryEntryImpl(MultiFileLoader.java:228)
	at
org.openide.loaders.MultiDataObject.createSecondaryEntry(MultiDataObject.java:783)
	at
org.openide.loaders.MultiDataObject.registerEntry(MultiDataObject.java:301)
	at
org.openide.loaders.MultiFileLoader.handleFindDataObject(MultiFileLoader.java:101)
	at
org.openide.loaders.DataObjectPool.handleFindDataObject(DataObjectPool.java:111)
	at org.openide.loaders.DataLoader.findDataObject(DataLoader.java:350)
	at
org.openide.loaders.DataLoaderPool.findDataObject(DataLoaderPool.java:378)
	at org.openide.loaders.FolderList.createBoth(FolderList.java:698)
	at org.openide.loaders.FolderList.getObjects(FolderList.java:509)
	at org.openide.loaders.FolderList.access$200(FolderList.java:50)
	at org.openide.loaders.FolderList$ListTask.run(FolderList.java:877)
	at org.openide.util.Task.run(Task.java:189)
	at
org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:330)
[catch] at
org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:721)