'Runtime error BitBridge.exe'

'Pure virtual function call R2065' I have a file that's proving hard to open, different problems each time and each time I succeed, I try to take out plugs and effects in an attempt to make it easier to open next time. Has anyone seen that error? Sonar 8.5.2, Win 7, x64 everything, Quad core 3.3, 12 GIG RAM Thanks - rev . Also unable to End Process when it crashes.