I was trying all capital letters instead of spelling out library. LOL
OK. Yes, a step closer, I got a new prompt I hadn't had yet. Looks like it's looking for some of those other file folder entries.
K. Thank you. Going back in now and rechecking names. (Also, tried with and without assigns, got same messge)..
If I piece together the next clue, I'll make a complete doc for anyone else who may encounter this little problem.