My issue has usually been BIOS settings that are supposed to work, don't seem to or are missing from my BIOS. I have a Z97X-UD5H w/i7 4770K, which is an insanely popular Hackintosh Mobo. Yet exactly following other's builds, never seems to work past installing the OS. I've tried different video cards including the popular GT-750SC which is currently THE recommended card to get.
I just got insanely frustrated with the entire experience, which for an avid computer tinkerer, is very hard to do.
I have Z87x-UD3H had that same chip in it until I dropped back to i5. Not much in the BIOS that needs changing from my memory if it serves me well at this time, make sure you are booting in EFI mode no compatibility turned on in there, turn off virtulization, SATA mode for hard drive and that is it I think. Choose iMac 14,2 for the model install clover and you should be good to go. What exactly were the errors you were getting?