Index: /trunk/src/VBox/ValidationKit/testmanager/batch/virtual_test_sheriff.py
===================================================================
--- /trunk/src/VBox/ValidationKit/testmanager/batch/virtual_test_sheriff.py	(revision 65247)
+++ /trunk/src/VBox/ValidationKit/testmanager/batch/virtual_test_sheriff.py	(revision 65248)
@@ -455,4 +455,5 @@
     ktReason_Unknown_Heap_Corruption                   = ( 'Unknown',           'Heap corruption' );
     ktReason_Unknown_Reboot_Loop                       = ( 'Unknown',           'Reboot loop' );
+    ktReason_Unknown_File_Not_Found                    = ( 'Unknown',           'File not found' );
     ktReason_Ignore_Buggy_Test_Driver                  = ( 'Ignore',            'Buggy test driver' );
     ktReason_Ignore_Stale_Files                        = ( 'Ignore',            'Stale files' );
@@ -695,4 +696,6 @@
         ( True,  ktReason_Host_HostMemoryLow,                       'HostMemoryLow' ),
         ( True,  ktReason_Host_HostMemoryLow,                       'Failed to procure handy pages; rc=VERR_NO_MEMORY' ),
+        ( True,  ktReason_Unknown_File_Not_Found,
+          'NS_ERROR_FAILURE text="File not found. (VERR_FILE_NOT_FOUND)"' ),
     ];