Hi Dietmar, Thanks for the reply. The variable aMutex is definitely valid - it is initialized on the stack in the constructor of the object that uses it. The call succeeds almost all the time, the program can go for minutes or hours before the crash occurs. And as I mentioned, entering and exiting a debugger allows program execution to continue. We've also seen similar issues with crashes in osg-65.dll where debugging and continuing succeeds, also only on Windows7. That's why I suspect it is something with the OS and not our code, as we never had/have this issue on our XP machines. I'm fairly lost as to how to go about debugging further other than trying to write very stripped down hello world type programs which reproduce the crash.
Cheers, Tom ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=41550#41550 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org

