I am glad also that I am not the only one having troubles with Sync. This is the second time this year I have had dramas. The first time was before they had a massive bug fix, the second is today. I dont have anyone linked to Facebook but have added a couple of familoy as editors etc. I try to upload any changes and it crashes near the end of the Sync process.
I used a back up last time but I now have 5,500+ people again and the same problem has occured. Ancesrty need to fix this problem as I wont be spending hundreds of $$$$$ next year with my subscription again.