I upgraded to 9.3.1 yesterday, probably the smoothest upgrade ever. I did get a prompt to download Net Framework and after I did so got the weird Finished/Interrupted screen above. I ran the installer again and it worked fine.
Rando,
The install itself has some custom actions that require .NET Framework 4.5.2 installed on the computer. On most operating systems that I have seen, if you have Windows updates all installed, it will install everything up to .NET Framework 4.6.2.
