Sys.WebForms.PageRequestManagerServerErrorException

[stefano]

Hi to all,

i have deploy my web form application (PB 11.5 build 4011)
on IIS 5.1 and when
i open a windows with one datawindow and one button,i
clicked on a button to start the datawindow's retrieve.
After some seconds/minutes the application respond with:
"Sys.WebForms.PageRequestManagerServerErrorException: An
unkown error occurred
while processing the request on the server. The status code
returned from the server
was: 500"

I have supposed, but i don't sure, that request is too long
and the server quit the session.
It's possible?

any ideas on how to solve the problem?

TIA