Running Win7 Pro
Mozilla Firefox v56 Portable
This apparently happened after I checked under Options/General/Startup for FF to check if it's the default browser.
Now there is a 2nd "Firefox" entry in 'Default Programs' that apparently is using the default Firefox profile instead of the customized profile it should use. It opens in a different layout instead of my 'classic' layout.
This happens when I click on a link in a e-mail in Thunderbird. If I click on the desktop shortcut it opens correctly. I tried that program 'Register Firefox', but it didn't change anything.
I tired clicking on the two "firefox.exe' under the applications folder, but those opened up another different layout. This v56 is the only version in 'C' drive.
I assume this is a registry entry.
(I tried placing a link to a screen shot, but the forum keeps shorting it making it worthless.)