[Brian Zekoff]

FOUND A SOLUTION!
Not sure if y’all are still having problems but figured I would post the solution I found. I was trying to open ProRes files from a Hyperdeck on a windows quicktime and premiere and got the same error. After spending a couple hours on the phone with both BlackMagic and Apple, it was suggested to try downgrading windows QT. So I did and it works completely fine now for both QT and Adobe.

So you will need to downgrade your windows quicktime from the current 7.7.4 to 7.6.9.