Turn on the debugger so you can see where the error is happening.
Look at the different variables so you have an idea why the error is being displayed.
Generally if you do this, you'll see right away what's causing the problem.
Get back to us with the details if you can't figure out how to correct the problem once you know where it's happening.
Feedback response number WEBB8ZYH6W created by Doug Finner on 11/12/2012