Index: /trunk/src/VBox/ValidationKit/testmanager/batch/virtual_test_sheriff.py
===================================================================
--- /trunk/src/VBox/ValidationKit/testmanager/batch/virtual_test_sheriff.py	(revision 62266)
+++ /trunk/src/VBox/ValidationKit/testmanager/batch/virtual_test_sheriff.py	(revision 62267)
@@ -430,4 +430,5 @@
     ktReason_Ignore_Buggy_Test_Driver                  = ( 'Ignore',            'Buggy test driver' );
     ktReason_Ignore_Stale_Files                        = ( 'Ignore',            'Stale files' );
+    ktReason_Buggy_Build_Broken_Build                  = ( 'Broken Build',      'Buggy build' );
     ## @}
 
@@ -917,4 +918,7 @@
                 oCaseFile.noteReasonForId(self.ktReason_Ignore_Buggy_Test_Driver, oFailedResult.idTestResult);
 
+            elif  sResultLog.find('AttributeError: \'NoneType\' object has no attribute \'addObserver\'') > 0:
+                oCaseFile.noteReasonForId(self.ktReason_Buggy_Build_Broken_Build, oFailedResult.idTestResult);
+
             else:
                 self.vprint(u'TODO: Cannot place idTestResult=%u - %s' % (oFailedResult.idTestResult, oFailedResult.sName,));