Rekordbox not updating / not relocating music

My Rekordbox, wont update I have tried many times to do so,  each time it says that it has updated to the new version using the extra memory, but then goes back to the older versions and asks me again to update it again. This whole process has gone on at least 3 times.  

My music also wont relocate, i have already tried "finding all tracks to relocate" which hasn't helped as a large portion of my tacks are still missing, or will be found for a short period of time only to be missing again. 

I have not moved my music from where it was the last time the tracks were loaded,  and from what i have read that would have been the reason it had gone missing in the first place. 

I'm using a MacPro. Send help......

PLEASE