Steve,
Can you shed any light on what it was that you did change? It might help isolate the cause.
>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.