I took of the neck and made sure it was in correctly and the string is still off. It is only the high E that is off, i think it might be some thing with the saddle if you can adjust it or not.
My problem is the high E string too far on the fretboard so it slips off easy. I tried to straighten the neck, but that didn't do any thing. Is there a way to move the saddle or something to move the string?