Thank you all for your responses – really appreciate you taking the time.
I’ve tried consolidating all footage (and other clips from different projects as a tester) but still getting this picture dropout (serious line breakup) on the footage; seems to be on any camera movement. This is really strange as I don’t have this problem on Premiere or in FCP.
I didn’t have this problem with MC6.0 but seems to have started when I updated to the 6.0.3 patch.
I’m really stuck now as until I sort this out I can’t use Avid !
Any further tips wold be greatly appreciated.
Nick Powell