My Mac wallet is not synchronizing, it's stucked at 98,25% for a few hours. Few days ago the sync has reached 100%, but It doesn't catch up now 
Try closing, then re-opening your wallet .Did a full system reboot, still stucked at 98,22%
And I've sent a lot of NAVs to my wallet :/
Have u tried to use Wine? It's a windows XP emulator. It helps you to get most of the stakes.
http://winebottler.kronenberg.org/
Download 1.7.37 version.