@PoP: Okay, you're using a tremendously old MRPI version. That'd possibly explain some of the failures, and it also means the logs aren't as verbose as I thought they'd be
.
Also, that hotfix package you tried wasn't the latest available, which explains why it failed (although, as @knc1 mentioned, you should prefer the "bridge" package for installation over MRPI, the Hotfix has stricter requirements to be able to go through UYK, but both are identical).