Import Sequence not working after Oct 17 update
I have updated CC today. I'm sharing work with a colleague via importing sequences. This has worked perfectly until today, could be a bug to do with the new multiple projects feature?
Premiere opens the Import Project dialog as usual:

Then, as usual, I select the sequence I want to import:
Click OK...
... and nothing happens.
We have tried to import sequences from updated and previous versions of CC. We used the Import... dialog as well as dragging and dropping from the Media Browser. We tried a different machine (MacPro 5,1 & iMac 5K Retina Late 2015), both running OSX Sierra 10.12.6
Please help! It's a live project and we'll loose a day's work if we have to revert to the last version of CC.
Thanks!
