e yo regaz, i've a problem wit my SP: when i load a backup into A/B banks and for example i hit the pad wit sample, the SP plays the sample and another sample (for example bass note and kick) or the sample in reverse mode, then i play reverse two times and the sample sounds correctly...i'm shure about saving correctly my backups but when i load them i've this problem, fuck!!!...help me please!!!

I have that problem, too, sometimes. Just switch to another bank, hit a pad, then switch back. That should do the trick. It's nothing permanent.

Try to update software or reinstall firmware.