mpc freezing after sequence edit

I am using jj os1

I have been using sequence edit to make my sequences longer just by using copy and paste but when I play the sequence after I edit it, my mpc freezes. Does anyone know how to fix or avoid this?

might wanna think about using a different version. Mine freezes when I try to convert from song mode into a new sequence so i just say fuggit and record from song mode.

yeah i guess i will just say fuggit.