Reply to Major Traktor Scratch Pro Bug - Tempo Fader Moving by Itself

Earlier today my decks were working fine, but something happened that is causing Traktor to act up and I've tried everything I can believe of but nothing has done anything.

Whenever I load a track onto Deck B, the tempo fader moves by itself all the way up, and the reset button greys out. If I hit the button to switch to internal playback, the fader becomes movable. But as soon as I go back to relative/absolute vinyl control, the fader goes back to the up position. It's only happening with Deck B as far as I can tell, but there's nothing wrong with my turntable and I'm convinced there's something going on in my software somewhere.

I'm using two SL1200s and an external mixer connected to a Traktor Scratch A6 interface. (Both are spinning at the correct speed, with a MKII control vinyl on each)

I don't have anything synced and I've tried messing with the internal clock--nothing. I've tried adjusting the beat detection settings, nothing. I've basically messed with everything in preferences but nothing has done anything at all to the tempo sliders. All my audio sources are set to the same frequency and bit rate. I've tried reinstalling Traktor, my A6 driver, and I've removed all mappings from the controller editor. I tried uninstalling Maschine to see if that had anything to do with it, and it didn't. I have no idea what else I can even try from here other than waiting for NI support to get back to me.

The only other thing I can believe of is the grounding being a problem somehow or a problem with the hardware itself.