Garageband 10 automatically muting when playback or scrubbing.

When using GarageBand when I'm scrubbing, do you want particular track, or when I'm flying back, the track automatically mute at certain points. This usually happens about halfway through sample that I recorded. If I loop the sample, it seems to mute and unmute at the same point in the sample as it repeats.

I tried right on the track error and deleting all automation, and I've also tried going to the next menu and deleting all automation on certain track there, I also tried copying the loop to a new duplicated track, and to make new created track wasn't going to education duplication because recommended on another thread.

Does anybody else have any ideas?