Reply to Sync master

Forgive me if there is a post already on here because I have searched for this problem and can't find information on it.

I'm running Traktor 1.2.1 - VCI-100SE - 1.2.4 TKS File on a MacBookPro

Whenever I start Traktor Deck A automatically sets to master and whenever I switch to deck B even after syncing deck B, Deck A continues to be the master even when I am not running Deck A.

Something is not working correctly and for a few months now I have not be able to figure out what has gone wrong.

Can anyone on here help me out?

Thanks.