Launchy Problems

I'm currently using Launchy (The Firefox Add-on) and it just stoped detecting Thunderbird Portable and I don't understand why. It detected everything else. I wrote the XML file correctly:Look on Google Docs, I couldn't get it to display properly here. It kept deleting the tags.

At first it was detected and then didn't work, then it did work, and then it was no longer detected! With no provocation (e.g. No change of settings). I don't get it, any suggestions?