As noted in previous posts, this version primarily focused on coexistence of multiple CCKs, as well as updating the proxy configuration to match Firefox 3.6. I also added some usability enhancements, including the ability to open an existing configuration.
The most interesting feature I brought back is the ability to hide a CCK so that it can't be uninstalled. Here's some background.
With Firefox 3.5 and previous, there were two options you could add to your extension that only affected it if it was installed in the same directory as the EXE - hidden and locked. Locked preventing the extension from being uninstalled (but it could still be disabled - so kind of useless) and hidden preventing it from being seen at all (which of course prevented it from being disabled or locked). Mozilla removed hidden for Firefox 3.6 but left locked behind. What I've done is made it so that if you specify locked, it means hidden. This was the easiest way to make this work and has the nice side effect that if in your deployment, you need to hide other extensions, just mark them as locked.
Support for the CCK Wizard is provided through Google Code.