I was trying to use the design manager features today and ran into this on my dev server. I’d copied the short cut from the screen and pasted it into the map network folder dialog and got this:

If you’re trying to do this from Server 2008 R2 you’ll need to do a simple piece of config first; Simply go and add the Desktop Experience Feature and reboot your server!

A nice and easy fix 🙂

Also make sure you use the http:// path and not the file:// path that you’ll get with right click > copy shortcut 😉