We can't replicate this issue. Have you made any changes to your web.config?
Please follow these instructions to see if you can tell the debugger not to break when this exception is thrown:
- Open the solution.
- Ctrl D, E (hold control and then press d and then e)
- Click the filter icon on the left and choose "Show Only Enabled Exceptions"
- Look through the list for the exception and uncheck the box for it.
We can't even find that exception in the list. That must be because we don't have something installed that you do have installed. Not sure.