Crystal Reports :: Persistent CR Errors "Failed To Open Report", "The Maximum Report Processing

Our heavily-used VS2005 application uses CR (10.2) for an MSWord-formatted stream to a webservice, and for printing from a CRViewer. We continue to get "Failed to open report" or "The maximum report processing jobs limit configured by your system administrator has been reached". Once the error starts, the only remedy is recycling the application pool, disconnecting current users.

I have used the proper ReportDocument Close() and Dispose(), and even GC.Collect(), in Page_Unload. I upped the Print Job Limit from 75 to 300. After recycling I delete temp files.

1) Is there any way to monitor the use of the CR resources, to see when they increase and get close to the limit?

2) Is there any way to free them without having to disconnect users?

I suspect users are simply closing their browser after printing from an open CR Viewer. It would still go through Page_Unload, right? So maybe I would benefit from closing and disposing the CR Viewer in Page_Unload as well as the click that returns them to the application.

I had assumed that to permit users to page through the report, the CR Viewer had to have ViewState enabled, and remain open through Page_Unload.