User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; ru; rv:184.108.40.206) Gecko/20101026 Firefox/3.6.12 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.1; ru; rv:220.127.116.11) Gecko/20101026 Firefox/3.6.12 switching default brouser FF3->FF4b7 won't switch default profile, which causes lots of problems with incompatible addons and etc... Suppose we want to keep our FF3 profile as it is. We may launch FF4 as "D:\Program Files (x86)\Mozilla Firefox 4\firefox.exe" -p Firefox4 -no-remote yet, if we set FF4 our default brouser,on opening link from 3rd programm, FF4 will use default profile,which is incompatible,since it's reserved for FF3. Same thing occurs if you execute FF4 with no command line parameters(quity a shiny result is shown on video). We may handle this by manualy moving FF4's profile to default profile, and FF3's from default to new, not-default. Yet, it should be more convinient if on setting itself "default brouser", fox will add neccecery profile key's to windows register (in windows case). May be it should be just currently used profile, maybe Reproducible: Always Steps to Reproduce: 1.suppose we have FF3 with some set of addons, 2.install some plugin, incompatible with FF4 3.install FF4b7 4.set FF4 your defaut brouser - it will now use default profile,created by FF3 5.create FF4's own profile 6.you may now launch FF4 with different command line -p keys , yet clicking on a link in a 3rd party programm will launch FF4 with FF3's (default&incompatible) profile. Actual Results: FF4 will try to use default profile on link open from 3rd app. While default profile may be incompatible with FF4. Expected Results: on setting itself default FF may ask for profile to use on link open. Also, maybe there should be such option in profile manager, or somewhere. http://www.youtube.com/watch?v=TLjEEyMLabM
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