It will open but it wont close.Has anyone had this problem?

mine wouldn't open...but it was after i had mucked with it, tryin to put the new (different color) slide door in it...i accidently broke a piece in the assembly. however, i took it all apart again, and took the glass out, and everything, and found the problem...and basically, i ripped out what it was gettin hung on, and that fixed that problem...

so, what needs to be known is, is it something electrical that's stopping it? or does it seem to be getting hung on something?

-John-