I have a page that uses update panel. There are a couple of cascading drop down list and a button. When I make my selections in the drop downs and click Submit button I get :
"Error: Sys.WebForms.PageRequestManagerServerErrorException: Input string was not in a correct format."
I set enablePartialRendering to false to see if I can get the actual error but I just get another JS error, this time:
"Error: Unable to get property 'add_pageLoaded' of undefined or null reference"
The compiled code works fine when accessed through a browser (or is it suppressing the error display?)