java.lang.ClassCastException: org.netbeans.modules.gsf.testrunner.api.Testcase cannot be cast to bv.offa.netbeans.cnd.unittest.api.CndTestCase
   at bv.offa.netbeans.cnd.unittest.ui.TestRunnerUINodeFactory.createTestMethodNode(TestRunnerUINodeFactory.java:48)
   at org.netbeans.modules.gsf.testrunner.ui.TestsuiteNodeChildren.createNodeForKey(TestsuiteNodeChildren.java:88)
   at org.netbeans.modules.gsf.testrunner.ui.TestsuiteNodeChildren.createNodeForKey(TestsuiteNodeChildren.java:58)
   at org.openide.nodes.ChildFactory.createNodesForKey(ChildFactory.java:120)
   at org.openide.nodes.AsynchChildren.createNodes(AsynchChildren.java:160)
   at org.openide.nodes.Children$Keys$KE.nodes(Children.java:1679)
   at org.openide.nodes.ChildrenArray.nodesFor(ChildrenArray.java:149)
   at org.openide.nodes.EntrySupportDefault$Info.nodes(EntrySupportDefault.java:805)
   at org.openide.nodes.EntrySupportDefault.updateAdd(EntrySupportDefault.java:441)
   at org.openide.nodes.EntrySupportDefault.setEntries(EntrySupportDefault.java:295)
   at org.openide.nodes.EntrySupport.setEntries(EntrySupport.java:83)
   at org.openide.nodes.Children$Keys$2.run(Children.java:1573)
   at org.netbeans.modules.openide.util.DefaultMutexImplementation$1Exec.run(DefaultMutexImplementation.java:973)
   at org.openide.nodes.Children$ProjectManagerDeadlockDetector.execute(Children.java:1938)
   at org.netbeans.modules.openide.util.DefaultMutexImplementation.postRequest(DefaultMutexImplementation.java:979)
   at org.netbeans.modules.openide.util.DefaultMutexImplementation.postRequest(DefaultMutexImplementation.java:942)
   at org.netbeans.modules.openide.util.DefaultMutexImplementation.postWriteRequest(DefaultMutexImplementation.java:313)
   at org.openide.util.Mutex.postWriteRequest(Mutex.java:388)
   at org.openide.nodes.Children$Keys.applyKeys(Children.java:1582)
   at org.openide.nodes.Children$Keys.setKeys(Children.java:1526)
   at org.openide.nodes.AsynchChildren$1.add(AsynchChildren.java:196)
   at org.netbeans.modules.gsf.testrunner.ui.TestsuiteNodeChildren.createKeys(TestsuiteNodeChildren.java:76)
   at org.openide.nodes.AsynchChildren.run(AsynchChildren.java:215)
   at org.openide.util.RequestProcessor$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)