Hans -Tried to replicate crash again - had a successful flight with default scenery, no problem, thought it was fixed. Then again with add-on scenery (Tongass Fiords, and a third with VFR SW England and Bristish airports), both freeze after a minute or so. Seems to be related to throttle movement - 'siren' sounds varies with throttle pitch, then next action causes a freeze.
The warning preceding the crash in event log is:
The COM+ Event System attempted to fire the EventObjectChange::ChangedSubscription event but received a bad return code. HRESULT was 80040201.
...and the text in the error on event log is:
The run-time environment has detected an inconsistency in its internal state. This indicates a potential instability in the process that could be caused by the custom components running in the COM+ application, the components they make use of, or other factors. Error in f:\xpsp3\com\com1x\src\comsvcs\package\cpackage.cpp(1184), hr = 8007041f: InitEventCollector failed
Name NVIDIA GeForce 6600
Adapter Type GeForce 6600, NVIDIA compatible
Adapter Description NVIDIA GeForce 6600
Adapter RAM 128.00 MB (134,217,728 bytes)
Installed Drivers nv4_disp.dll
Driver Version 22.214.171.12484
Thanks for looking at this problem.