FireQuery now works also with 1.3. I've backported it recently.

I maintain four addons built on top of Firebug (www.binaryage.com). It is very difficult for me to keep things working for different Firefox and Firebug versions. Especially when firebug authors are changing internals and extension points with almost every new version. And then come some people on mozilla addons and downvote my addons because they are not working for them when they first try. They even don't try to test different Firebug/Firefox versions, they just complain.

Maybe Firebug authors have same feelings about us Firebug users, or on the other hand about Firefox developers who are probably making their lives harder. I don't know. The true is that I've seen lot of criticism about broken Firebug since version 1.2