I am using VS.NET Tools for Office (using Excel 2003
release version) and I am comming across an error that
seems to be occuring at random (maybe once every 3 to 6
runs)at run-time in my application. It does not always
appear at the same point in my application either. It
says (something like this):

"Error has occured in UNKNOWN module"
"Object reference not set"

But then, when I click the "Break" button to debug my
code, I get another error that says:

"No source code at location"

Considering I have Try...Catch statements EVERYWHERE I
don't know where this is comming from. It's a releatively
small and simple application.

Is this something I am causing or is this a bug?