Hi there,
I've recently got some error messages such as the following while debugging server-side code on a ASP.NET Ajax page:
Seems I've passed the default 90 seconds that the ScriptManager allows for processing an asynchronous postback. Just set the AsyncPostBackTimeout property of the ScriptManager as seen below, for example at 600 seconds (10 minutes) so you can debug your server-side code without any exceptions:
You can read more about the Sys.WebForms.PageRequestManagerTimeoutException on MSDN.
Hope this is usefull!
gr,
Robbert