ENB series is a graphics "improver" similar to SweetFX which predates the latter for several years.
I think I figured out why SweetFX didn't work - it requires multisampling to be off, but the minimum value in WOFF settings is 2 so it is always enabled. I will add an option to override it in the converter, but I'm curious why WOFF devs restricted it this way.
If the game fails to start try installing the latest DirectX. If it doesn't help then perhaps I screwed something. The next version will have an option for writing a diagnostic log.
