4 years ago when I was the Mac Tech here I used to set up user templates but I haven't done so since then so it's possible that something in OS X has changed since then that I'm not aware of that's causing the problem that I'm seeing. I've been Googling all morning trying to figure this out and I ran across your script so I tried it to see if it avoided the problem but it is still happening. When a new user logs in they are correctly inheriting all of the settings that I want them to have but the "favorites" on the left side of a file dialog box (which I didn't modify at all) as well as the Downloads folder that I added to the Dock are both pointing to the temporary account that I used to create the user template instead of pointing to those folders in the user's directory and as a result they aren't usable due to lack of permissions. Any idea why this would happen? If I restore the archived version of English.lproj and log in as new user then those folders all work correctly. If I manually copy either the entire temporary account or just the Library folder from the temporary account to English.lproj those folders still end up pointing to the temporary account. If I log in as root and run your El Capitan script it runs fine but the result is the same problem. I'm baffled. Thoughts?