In some citys me turn by turn directions dont work the roads show purple when they are normally grey how do i fix this i am running a copyed disc wich everything else works except a few citys

I believe the answer is in your own question.Your copied disk is the problem.You need a properly working one for all cities.

it is a copied disk from the original tho so would that still scre it up

Yes,if it didn't copy correctly.I have one and mine is about 99% right.The disk froze on me twice since I've had it(5 mos.).I just take it out when it freeze and reinsert and its good to go.