I can reproduce this. Did some testing and figured out this:
InjectFXAA/FXAATool, Boulotaurs injector, ENB, eFX and ReShade all fail and this error comes up
To me this looks like an anti-cheat protection by BattlEye here, where InjectSMAA was whitelisted because often used (old SweetFX runs on it), rather than a problem with ReShade (all these injectors suffer the same and it's highly unlikely they all have the same bug). I also wrote a quick wrapper, which does absolutly nothing except for forwarding calls to Direct3D, same issue.
Not much I can do about this unfortunately, other than contacting BattlEye once ReShade is out of the beta and ask them nicely. =)