Second thing, the big thing... it doesn't work with custom made groups when Joomla! is in 1.0 compatibility mode. This is a little obvious but that could have saved me about 10 minutes of frustration, especially after having paid for gold level access for another Ninja addon that has yet to be installed.
Thanks for the reply.
Perhaps we should highlight it more on this page that it doesn't do the group creating itself.
But we thought it was clear on our site that this extension is designed specifically to supplement other ACL extensions, and is not an ACL extension in itself. (it's written in a big red box). Obviously we need to look at it and make it a bit more obvious.
As for not working in compatibility mode, is the ACL provider the extension using compatibility mode?
Odd that it does that.