I too was getting this error. The scary part is that I made some changes to my form and the error went away. I did not change anything related to the exact error message location though. How weird. Thought you might like to know. If you get this error, it doesn't mean the problem is where the error says it is. Except for the fact that the error was having to do with the same form but not the same command button within the form.
Steve Kramer
Kramer & Kramer Design
"Home of Go Cartoons"
Web Site:
www.stephenkramer.comWould you believe Far Side Lite?
More than 270 original cartoons.