If so this si because you are back spinning to fast for the software to decode your timecode... try spinning a little slower. This problem accures with all DVS systems if you make a drastic spin.
No, there is something wrong with your setup. Can you post a config report extracted from mixvibes with your turntable at 0 pitch.
Also send details about your computer.
You shouldn't have this problem while spinning with DVS.
Fast spin is common to all scratchers.