Originally posted by whereisscott: I'm the only user on my Mac, so I'm already the Admin (sorry, didn't make it clear I was on a Mac). Confirmed in the Permission for Steam that this is being run with full read/write permissions.
I'm not sure if it's the same for Mac as on a Windows machine, but even though I'm the admin/only user on my machine, I still need to do the "run as admin" thing for certain actions (some unrelated to gaming). Can you try it and let me know?