[digidesigner]

I do not know if this is related, but I often have a similar problem with my 6.4.1 The difference is, that every file-based operation gets grayed out for some reason... the session still plays fine, but copy-paste-cut wont work... I don't know exactly how, but I get it working again within the session without the restart of the program using some tricks like record enabling a track or using scrub tool on different tracks in the session, no rules it just works again at some point. Very annoying indeed.