Wont import quicktime

Running H20 on windows 10 with latest quick time installed
Trying to import a QT to my scene - but NOTHING happens - no errors, no dialogue boxes - nothing
Quick time file is 1920 x 1080, square pixels, animation codec

THis seems like a bit of an issue for others too

If you don’t see the Converting Movie to Images Window ? Wait a moment.
Depending on size and length, Harmony might need 5 to 15 minutes to convert those movie files.
Or even longer before the Import Images Dialog Window appears. Be patience