Alan,
I think I answered another question for you on this same subject a little while ago. The link to that post can be found
here. Is this the same problem that you are seeing? If so, were you able to debug the program and see what particular line is giving you the error?
Also, in your question above, I'd just like to confirm that you see the error whether or not you have DellTouch Programmable Hot Keys 2.10 installed.
Regards,
Shannon R.
Applications Engineer
National Instruments