Help with Help

I was in options, and pressed a help button - Firefox Portable then opens a web page with information - however it didn't open in the existing version of Firefox but launched a new version - and I'm not sure if that was the portable version or not
(I don't have a version installed, but i'm assuming if you launch the browser without using the launcher things go wrong).

Is this a generally bad thing? Can things have been screwed up now?