Today I’ve noticed that after updates on 13.3.2013 of several Office 2013 components, SkyDrive pro has stopped syncing Document Library from SharePoint 2013 site. It seems that this has gone global. No one in my office can sync, even with empty document library. Way to go..
So far the only comments on this are coming from Office365 users.
I’ll keep you posted.

29.3.2013. SOLVED

You need to install 2103 March Cumulative Update for SharePoint and problem is solved.