Forbidden characters cause no-feedback fail

(Bug, Closed -> Fixed, Priority: High, Test Status: No automated tests yet , Reported By Bad Link: Thing 3y284of not found, )

Properties, UX

Summary: I start creating a new property. I enter, as its name, "character(s)". I enter other info, then click Create. Nothing happens. Guessing that the parentheses might be the problem, I remove them, and then the Create button works.

Forbidden characters are fine, but there ought to be a message telling me why I'm not able to Create.