We develop Windows software that resembles a CAD floorplan drawing of a house or building and performs calculations based on the dimensions of the house, etc. We have a customer that is trying to run our software on a Citrix system. The program will occasionally quit with no warning, message, or anything. Now it's running, now it's not. In the early days I would have said it was running out of memory. Now-a-days, it's hard to tell. The user sent us a captured video of a 2 hour session. After an hour of drawing this complex house, it just quits. He opens the project and goes back to work. He was doing an 'edit points' to a room. He moved an added point, it snapped back (as if he hadn't moved it), moves the mouse away, moves it back to fix it, and it quits. Is there a way to limit the amount of memory that is available to a user in Citrix? I don't know how Citrix is set up. The customer has multiple servers in multiple locations, but I believe the program is installed on a local server. Could there be a time limit on how long he can run the program? Any help would be greatly appreciated.

Phil