New "Share to iTunes" problem

New Problem just happened on Logic pro X

I dont know if these problems are linked, but I went into a recent new project to find all instrument tracks were slightly out of sync with my drum track.

It took me ages to re-align everything with my drums, finished my track, but every time I export the song to iTunes Logic crashes and the song has not exported.I opened another project and found instruments out of sync with the drums.This time I just tried exporting to iTUNES and Logic crashed again , with no export .I have since opened several existing projects and the same out of sync problem exists on all of these projects.

Any Ideas please ???