Index: /trunk/src/VBox/ValidationKit/tests/additions/tdAddGuestCtrl.py
===================================================================
--- /trunk/src/VBox/ValidationKit/tests/additions/tdAddGuestCtrl.py	(revision 84219)
+++ /trunk/src/VBox/ValidationKit/tests/additions/tdAddGuestCtrl.py	(revision 84220)
@@ -2986,5 +2986,6 @@
                             tdTestResultExec(fRc = True, iExitCode = iExitCode) ]);
 
-        if sVBoxControl:
+        if  sVBoxControl \
+        and self.oTstDrv.fpApiVer >= 6.0: # Investigate with this doesn't work on (<) 5.2.
             # Paths with spaces on windows.
             atExec.append([ tdTestExec(sCmd = sVBoxControl, asArgs = [ sVBoxControl, 'version' ],