I have been able to successfully share folders and have them show up on the website version of SkyDrive with one of my co-workers.  However, they are not showing up in the PC version of SkyDrive when he is signed in, or on the Surface 2 app.  I have sent an invite directly to this person's email to share the folders from my PC version and he doesn't get the emails anywhere. (Not even in Spam)  Any help would be appreciated.