[MERGE][BUG #77657] Give a nicer error for non fs_enc() paths

[John Arbash Meinel]

John Arbash Meinel has voted approve.
Status is now: Approved
Comment:
can someone else try to submit this to PQM? Every time I submit it, it 
seems to disappear into nowhere. I don't get a failure or success email.

For details, see: 
http://bundlebuggy.aaronbentley.com/request/%3C47E00E3A.2090305%40arbash-meinel.com%3E