We have both 2012 and 2013 AutoCAD at work, and both versions are having the same problem. When adding favorites in Design Center, it does not show up. The shortcut is actually there if I browse using Windows Explorer, but it does not show up in Design Center. I guess this is some issue where shortcuts do not show up, which is beyond me because that is how the Favorites system is supposed to work.
I should add, this is not an issue on some of our older machines running AutoCAD 2009.
Can someone tell me how to get around this annoying issue?