Installed a new wallet on my v-server (Windows 2012 r2) syncing until block 3246 then says it finished syncing, but my Mac wallet is already on block 3274, what's wrong?

Now my Mac is 'out of sync'...

If you're having issues with wallet synchronisation, please ensure you are running the latest client and restart it. If you're running an older version this could be causing the problem.