Can't Connect Vinyl to Cross

I have Cross 1.3.1 on my new MacBook Pro. I use the Mixvibes U46MK2 with an external mixer.
The software works fine for lines - but I cannot connect my Tech 1200.
The BPM is very slow under 10. When I try to CALIBRATE it in preferences it says the "Stereo Input Signal is Abnormally Unbalanced, Please check the connections."
I did check the connections - the line from the turntable goes to Input 1 and 2 on the MK2. The corresponding outputs go to my mixer. The line is connected to the Ground post.
I am using the control records that I got in the DVS bundle - is this my problem? PLEASE HELP - I would like to use vinyl tonight.
The software works fine for lines - but I cannot connect my Tech 1200.
The BPM is very slow under 10. When I try to CALIBRATE it in preferences it says the "Stereo Input Signal is Abnormally Unbalanced, Please check the connections."
I did check the connections - the line from the turntable goes to Input 1 and 2 on the MK2. The corresponding outputs go to my mixer. The line is connected to the Ground post.
I am using the control records that I got in the DVS bundle - is this my problem? PLEASE HELP - I would like to use vinyl tonight.