Retail+Nost

Hey Guys
I wanted to ask if any of you have Retail Wow and Nost installed on the same computer and if yes did you have any complications between the two versions of wow. Any risk of getting banned etc. Ive spent alot of money on retail but I wanna enjoy the good old times without the risk of loosing my retail account.
I wanted to ask if any of you have Retail Wow and Nost installed on the same computer and if yes did you have any complications between the two versions of wow. Any risk of getting banned etc. Ive spent alot of money on retail but I wanna enjoy the good old times without the risk of loosing my retail account.