So, I have ENB installed (wrapper version), but it generally doesn't work.

I get a blank coloured screen, that varies between yellow and purple depending on the lighting, no matter what effects I have active.

I can use ShiftF12 to turn it off and on, and the game is running fine, I just get none of the effects with it off (obviously).

ShiftEnter doesn't bring up the menu, but with the effects off, it brings up a white square a little down and left from centre. Ditto with * for framerate.

And once in a while, for no reason I can determine, it just works.

Any ideas?