I did, yes, update to 4.25.4 so it is loading the 4.25.3 and earlier created projects.
I was using 4.25.3, but then when it was stopping at 39%, I updated to 4.25.4 to see if that would fix.
As it turns out, I probably could have left it at 4.25.3 and let it run through the derived cache rebuild, but it just so happened that you had replied to my post after I had already updated.
So far I am not encountering anything unusual, but I haven’t target-tested the material things that were shown above.