Might I ask if anyone has had problems with the Firefox 64-bit Nightly version not working with the 32-bit version of Jportable? I have installed both in a new folder, but the 64-bit Firefox does not seem to recognize JPortable, although it works correctly with the 32-bit version of Firefox Nightly. I saw that the 64-bit version of JPortable does not work with browsers, but I wasn't sure about the 32-bit version. Thank you for the help with this, and if I can provide any more information, please let me know.
Firefox 64-bit may require Java 64-bit to run. I don't actually know and have not tried it. But the launcher is not equipped to handle that scenario, at least not yet. Firefox 64-bit nightly is untested and unsupported at this stage.
Sometimes, the impossible can become possible, if you're awesome!
John,
Thanks for the information, and I suspected that was the answer, but I thought I'd ask.