Session timeout

Hi there,

I just setup Crystal Reports server 2011 on Windows server 2008.  It works perfect for small reports, but some of the bigger reports that require more time to run keep getting the error "The viewer could not process an event. Timeout [RCIRAS0244], Error code: 0  [CRWEB00000119]".

Anyone know how to fix this error please suggest.  Thank you very much......