Carriage feeds in URLS cause an exception

(Bug, To be Fixed , Priority: Low, Test Status: No automated tests yet , Reported By Bad Link: Thing 3y284of not found, )
Errors
Summary: If you copy/paste something into a URL Type that somehow had a carriage return in it, that will cause an exception when you hit Done.
Low priority, since this is in some sense User Error. OTOH, it should give a better error message.