No, don't.
Corrupt file errors happen when you have modified files while the game is updating, there are sometimes minor updates which causes this to happen again, no you do not need to run a full repair.
Close the launcher, run meta injector, restore backup (which you just told people to delete, don't), select "prevent file recheck" in meta injector, close meta injector and run the game launcher again for the update to be performed, then perform installation with meta injector and you're done.
Stop over-complicating things, you never, ever have to run a full file repair or delete anything, if it takes 50 steps to do something you could do in 3 steps, you're doing something wrong, stop creating steps where there aren't any.