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!