Thank you for taking the time to work with us on this @ken_sc and others. We have verified a problem with using Blackmagic Desktop Video version 10.9.11 (Feb 2018) on Windows, but it could happen with newer versions of that software as well. It has been causing users of Premiere Pro, After Effects and Media Encoder to crash on startup after updating to version 23.4.
IMPORTANT:
If you have an older version of Blackmagic Design Desktop Video software installed, you should remove it or update to 12.4
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