Ok, so I ran the PR installation by going to the virtual CD and running 'setup.exe' as Administrator. I got this at the end of the install:
I thought that perhaps this might be a problem, so I cancelled the installation, and manually deleted the whole PR directory where PR had been installed, deleted the 'Reality.PRPatchFile' registry key, and ran the installation again, without any AV or firewall program running.
The registry key in question previously had the following value:
This time PR installed with only the Registry error. Hmmm... when I checked the registry, all the keys had been re-created, but the data in the 'command' key could not be re-created/re-written (see first image below this paragraph), but the data in the 'DefaultIcon' key was "allowed" to be re-written (see second image below). WTF? Certain keys are protected? I had to manually re-write the 'command' key data.
The script is then run and gives the following results:
Run the launcher, and same error. So, at some point in time yesterday I was able to install PR without any problem, and the registry keys were written, then at some point I get this 'Machine Error" msg and two PR executables are now protected (or blocked?) along with a particular registry key. Unbelievable, either Comodo blocked or protected these executable and this one reg key, and is still blocking them even though it isn't running, or, the PR setup.exe executable, even though it's being run as Administrator, has lost privileges to access certain registry keys and executables? Can't be, why not PRUpdater.exe as well then? It didn't choke on writing over that file.
So Comodo? But then ppl have reported having the same problem without Comodo nor any AV installed, haven't they? Guess I'll have to completely un-install Comodo and retry the installation?
Very discouraging, hope I'm not the only one, else I may never play PR again? I say this 'cause I get the same error on my brand new 32-bit Windows 7 installation (different boot).
Any other fancy ideas? Thanks.
P.S. I am running a 64-bit version of Windows 7 Ultimate, if that's of any interest.