Tried to install 1.2 but the installer gave an error:

"There is a problem with this Windows Installer package. A program run as part of the setup did not finish as expected. Contact your support personnel or package vendor"

While I leave the installer to that stage, I can see and launch PhenomMsrTweaker.exe and it works, at least the same options as in the 1.1 but the custom Cool and Quiet gives error when clicking apply:

"The service could not be controlled:
Cannot open PhenomMsrTweaker on computer"

Edit: Downloaded twice, installed multiple times, in my own folder and to the default folder. No effect. This is x86 version.

Could this be due to non-updated .NET framework?
I do have 2.0 SP2 - 3.0 SP2 and 3.5 SP1, but is the "+" some other version? Or does it just point out that program needs 2.0 or newer?