Reply to VCI 400 problem

Hi all !

Yesterday I bought a VCI 400 and I use it with Traktor 2.5 and the original VCI mapping (VCI-400_TSI_v1.0.5) but I pressed a button and now when I manage the crossfader from right to left, the "high button" (next to the gain and just over the mid) varies from 0 to 100%.. I don't know how to disable this... Any idea ??

Thanks !

ps : Sorry for my english I'm french