Update. I should have tried AH before I posted earlier. The new drivers seemed to have completely corrupted my SweetFX configurations for every game I use SweetFX. With SweetFX on, I get the following error when starting up AH, though I can still play after the error messages are closed out and the SweetFX settings are working in game.
With SweetFX disabled, no error messages and obviously no SweetFX either.
2nd Update: Fixed the problem. The problem wasn't the drivers, it was the latest version of the Geforce experience software that was causing a conflict with SweetFX. If you're running SweetFX and installed the GFE software along with the drivers and were getting the error message I was in any game with SweetFX enabled, just uninstall the GFE software.
ack-ack