I noticed that this would not work with Portable Firefox as well.
I emailed the developer and he told me to get the new version.
Re: Thanks for the application speedyfox_portable but it is not ....
From: Josh Bodens (email@example.com
You can manually locate Firefox profile in SpeedyFox 1.1 version.http://www.crystalidea.com/speedyfox
CrystalIDEA Software, Inc.
I checked and I had downloaded a previous version, so I tried again and no joy. (Original download, email, reply, and new download all same day)
I have emailed the developers/support again but so far no reply.
Based on Dot's posted success I must assume it is not working because I do not use profiles.
Dot please post a reply to this question, Are you using Profiles in Firefox?
Further did the computer you were using have a folder in the programs file for Firefox, or anywhere else on the system, I.E. relics of an old installation or a installed copy of Firefox?