This encompasses two problems: One FF portable doesn't have multiple profile support. Two: I can't have FF portable open and FF regular. I know I can have multiple FF's open at once with regular Firefox by forcing the profile but if I'm using a friends computer and they have their own Firefox open and I want to open my Firefox on there's I have to close their FF in order to open mine.
PS. My own computer is now broken so I ported all my profile data for Firefox and Thunderbird to an SD installation thus I really need to have my Firefox on others computers now.
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Not possible. You can't have two Firefox instances running at the same time or else the two profiles will mix. I doubt your friend will be happy if that happens.
You can do this by setting "AllowMultipleInstances=true" in FirefoxPortable.ini
Check out FirefoxPortableDir\Other\Source for example ini file and readme with all options expained.
Af far as I remember AllowMultipleInstances is technically launching Firefox with "-no-remote" command line switch.
Thanks Kulmegil, any reason it's not set by default to do that?
Also to the guy who said it's impossible in my post I mentioned that I did run multiple instances before my laptop broke by forcing the profile I wanted to run. I never had any issue with profiles merging and I have no idea where you came up with that (unless it was a problem from a really old version of FF).
As indicated in the docs, it's not portable and won't clean up anything that Firefox deposits on the local machine. The profile itself is portable, but it'll leave bits behind. It's also then impossible to open any files via associations or dragging and dropping them onto FirefoxPortable.exe.
Sometimes, the impossible can become possible, if you're awesome!