Hi Steve,
Thanks for the response and you were spot on…..
uuummmm, Vegas 12….. Well after 2 days of frustration, with more than 40 ‘not responding’ hangs, I did the following:
Uninstalled Vegas 12
Restored my PC by a week, undoing a jarva and quicktime updates
Finished the project in Vegas 11 (with rendered mt2 files from the crippled v12)
This morning, I have worked on v12 (after switching off GPU – read that somewhere) and so far so good – not sure which of these may have resolved the issue, but all seems good at the moment.
Martin