Updated Traktor Problems
I updated my Traktor to the newest version aswell as the soundcard drivers and now sound is only coming out of channel C & D on Audio 8..lost all my playlists etc. how can I undo this or fix it 
Try re installing the driver for the soundcard first. As for the playlists, i think they are gone unless you have them backed up.
Traktor is keeping Collection Backups every time you close it (i think! my is doing that). The update probably created new settings folder, just go to File Management, select the root dir option and navigate to the older version of Traktor, that should bring everything back 