Roto Brush Not Propagating
Once I use the Roto Brush to highlight an object, I am stuck with the error message: "Roto Brush 2 Initializing Adobe Sensei Propagation Module". The preview does not progress past the first frame and AE will usually crash if I try to click anywhere.
I have seen the same problem fixed by transcoding from MP4 to QuickTime, but this has not changed anything for me (unless I have misunderstood what this means).
I have previously used the Roto Brush without much difficulty and on MP4 files from Premiere Pro, so I don't know what has changed.
AE Version 23.6.0
Windows 11
Processor Intel(R) Core(TM) i5-8350U CPU @ 1.70GHz 1.90 GHz
Installed RAM 16.0 GB (15.9 GB usable)

