I have a music folder, and I can't create new folders in it. (My own folder on my E drive, nothing to do with the Windows supplied my music folder.) I get a you need permission warning.
Now. I am listed as the owner of the Music folder. I did the Take Ownership registry trick (from these forums) a while back and ran it on Music. I have also used the security dialog on the folder to specifically assign myself and also checked the "update sub stuff" check box (can't remember what it really saiud, but you experts know the one). I also run explorer as admin using the usual Run as Admin option on the icon to launch it.
Even with all this - I can't create new folders in Music. Some of you might have heard me scream nasty things about Windows 7's mother today. I'm getting annoyed. Please help a poor soul.