12.1 and up install the runtime, you should never install the SDK on top of Catalyst anymore.
What arguments did you give DM?
Funny you should say that, because I just finished doing a complete uninstall and reinstall of 12.2 and it seems to be working now.
However, now I'm having a problem with the machine locking up while mining.
I suspect my power supply is sketchy, and could be the issue.
Thanks for the quick replies!