Well considering the error you are receiving there's a problem with your .NET FW4 installation, but you said have used some tools, with exceptions of the injectors, and they are working fine, that's odd...
Anyway, try reinstalling it again, but before you do that, run the Windows Update and see if have something besides of .NET Framework 4 to be installed. If don't have anything, reinstall it using the latest version, remembering to close or disabling every other applicative while it installs in your computer.