There was a similar issue in LabVIEW 5.0 where you would get the error if you passed an empty array to the 'items' input of Delete Menu Items. This was corrected in version 5.0.1. Did you mass compile your VI's after upgrading to version 6.0.2?
I tried to reproduce the problem in a small VI but was not successful. I can run an executable built from this example without any problems. I am attaching it for you to test.