i asked this already but no answer. I have two recovery keys, how can i check which is the one set for my '''preferred''' installation of Firefox. One was for my en-CA install, the other for an en-US install made a week later due to an update glitch. I had to use my en-CA recovery key to recover my settings to the en-US install, which then made a new recovery key. I want to get rid of the spurious en-US install. -en-CA is in it's original location c:\program files\mozilla firefox -en-US is in "C:\Users\%username%\AppData\Local\Mozilla Firefox\firefox.exe" the directory trees appear the same except en-CA has a locale.ini file that the other does not. Does the original recovery key STILL apply to the -en-CA install or has the -en-US install's key replaced it. And can I delete the -en-US folder with consequences?