On a recent fight from KSAN to KPHX (FS9) on the PMDG 737-300 my computer screen freezes and locks up right around N 32* 53.07' W 116* 15.00', right about the time the plane is leaving the Mega Scenery So Cal. I have to hit CTL+ALT+DEL and the error message is " Microsoft Visual C+++ Runtime Library, Runtime Error, R6025 pure virtual function call". A report is sent to MS, no answer from them, it has occurred almost everytime at the same location even with the Level D 767, have not tried other routes, I want to complete this flight one day would appreciate any help or suggestions. Thank you, Mark

Turn off the scenery add-on and try it. If it runs then try reloading the scenery, if that doesn't work then you know something is wrong with the add-on. Check with them.

Thank you Dan, everything is up and running, Mark:)