Got a tough one: First time I have seen this problem: FF portable has an executable out front up top, and an executable in a deeper 32-bit folder and a 64-bit folder. Any modifications to the browser, including themes and colors and appearance mods ...are displayed when you open the browser to surf, (32-bit,) but if I click from an email link - it opens the uppermost executable instead - with none of the mods I have made to the browser. (So the browser as it first appeared on install, with no/zero/nada customizations and extensions.) I cannot see how to make an email link refer to the deeper executable. Get it? Thanks for any assistance. (!)