After upgrading to Firefox 6.0.2 this morning I find relay browser won't open. I went into preferences and navigated to firefox.exe and it didn't work. I tried just putting "Firefox" and it didn't work. I tried deleting it entirely and it didn't work. I changed to Internet Explorer and it opened fine (but who wants to use IE).
Anyway, if "Bug" isn't the right prefix feel free to change, or if there's another thing I can try please let me know.