Applications/Firefox36.app/Contents/MacOS/firefox-bin -ProfileManager Run this command from a Terminal (found in /Applications/Utilities):.app to ‘Firefox36.app’ and move it to your /Applications folder Drag the file from the DMG to your Desktop instead of to the Applications folder.Download the Firefox 3.6 release from.This should also work on Snow Leopard, provided you have at least 10.6.2, because the -args parameter was introduced in that version. Fortunately there are a few tricks you can use to make this happen. There’s a problem here: Firefox doesn’t like it when two different versions are run side-by-side. Firefox 3.6 has a few bugs, and because of its big installed base you probably need to run some tests on it as well.
However, there are still many people using the older 3.6 version of Firefox. Both Chrome and Firefox have a very fast release cycle, where new versions are released every six weeks or so. Most of the bugs you need to fix are probably in older versions of Internet Explorer. Cross-browser testing is pretty essential when developing web sites.
