Can't Sycronize

I am unable to synchronize after the recent update on Feb.19, 2013.

I use a Mac (desktop) OS X 10.8.2

A tringle appears on the top right corner,

covering my synching arrows. It say

an error occurred during synchronization, please try again.

My internet connection works fine.

I'm using Logos 5 , with Starter resources

I hope I'm the only one. GB!