On the Flagged Post tool, voting to close a question brings a JavaScript error:

Uncaught TypeError: Cannot call method 'replace' of undefined (cdn.sstatic.net/js/full.js?v=c579865e9dfc:1)

Which leaves the page looking like this;

i.e. the "Vote to close" box never closes upon choosing a selection.

Should it matter, I'm running Chrome 14.0.835.202 m on XP SP3. Caches have been cleared etc etc.

Futhermore, I don't get this error when voting to close a question through the question page itself; it seems to only be a problem on the 10k tools page.