modxcms/revolution — pull request #543 by fireproofsocks (2013-06-18 15:00:31+00:00)
Title: Filtered error messages so they don't crash the javascript modals.

This is the quick fix: htmlspecialchars to filter error messages to make them compatible with MODExt's failure alert box.

A more thorough solution here would be to tackle this: http://tracker.modx.com/issues/9982