Hey Rich,
Thanks for the reply.
I'll check that out...Sounds exactly like the sort of thing which might be a cause (though it was working fine with 2019.6)
Just tried it again and (of course!) now it's working as expected, but I've had it hang like this several times in the last few days, and I'm not sure what I'm doing differently when it does cause a hang.
I was wondering if it might be an issue regarding saving the file (or not) in RX before sending back to PT...
What would be really useful would be for Izotope (and actually all developers) to keep details of their legacy release notes available as an archive. I literally can't anywhere find info as to whether this is a known issue (and therefore fixed) or if it's a system specific issue which therefore may or may not be fixed by me upgrading to RX7 (which otherwise I don't particularly need)
Sorry... Rant over...
