This stack trace is different, which is why the previous fix doesn't work in this situation. The previous fix fixed the 'smilie' message when previewing new wiki pages; this 'smilie' message occurs when a Javascript preview of a wiki page is opened. I also found some more situations that might have their own 'smilie' messages; this one and the other ones I found will be fixed in the next build. In the mean time, you can safely ignore this message, since it's not a fatal message.