Hey,
I'm using ccminer 2.1 and keep getting the error "abnormal hashes, exiting with code 211!" when mining x11 on 4 750tis. Any advice as to what may be causing this? CCminer just shuts down after the error which occurs after a few hours mining.

Thanks
You are using "ccminer split screen" so if you are asking for help write version correctly.
You are overclocking your cards? If so try decrease your settings of overclocking.