Unlike with the regular FF, with the Portable version, all
your extensions, etc, are stored in the same area as the
program. Thats why you can take everything from one computer
to the other.
With that said, I have no idea. Perhaps when the extensions
got install, it went into the regular area of the FF
profile, and not in the profile for the Portable version. I
would say, save the extensions to your thumb drive, and
install them from there.
Otherwise, go and ask the people at the portableapps forums:
http://portableapps.com/forums. Maybe they can help you.
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