Software pitch doesn't stop moving [Mac OS X]

Hello,
I have an issue since a few days while using MixVibes Cross, the pitch is not steady.
The pitch always moves between 0 and +3 all along the song whereas the pitch on my decks (Numark TT 200) are at 0 and the quartz locked. So the tempo doesn't stop moving, so annoying... My turntables and their pitches work fine with a classic vinyl.
I tried to re-calibrate, change the "pitch bend" options, reset the pitch in MixVibes, clean the vinyls, clean the cartridge (Ortofon Scratch)... but the issue persists... Do you have any idea how to solve that ?
Here is my config:
Numark TT 200
Vestax VMC 002
MixVibes Cross 1.3.2, card U46 MK2
MacBook Aluminium with Mac OS X 10.6.2
Thanks,
AlecSkid.
I have an issue since a few days while using MixVibes Cross, the pitch is not steady.
The pitch always moves between 0 and +3 all along the song whereas the pitch on my decks (Numark TT 200) are at 0 and the quartz locked. So the tempo doesn't stop moving, so annoying... My turntables and their pitches work fine with a classic vinyl.
I tried to re-calibrate, change the "pitch bend" options, reset the pitch in MixVibes, clean the vinyls, clean the cartridge (Ortofon Scratch)... but the issue persists... Do you have any idea how to solve that ?
Here is my config:
Numark TT 200
Vestax VMC 002
MixVibes Cross 1.3.2, card U46 MK2
MacBook Aluminium with Mac OS X 10.6.2
Thanks,
AlecSkid.