Running Win7Pro64. Tried to update to 3.6.4 and it failed. It said to download the whole program so I did. Tried to install and says that the "License File" is missing. SO I go to un-install 3.6.3 myslef with Control Panel. All that did was remove Firefox as a listed program in control panel, all of it is still there in Explorer and it runs fine. So I go to use Helper.Exe under the Uninstall folder of Mozilla Firefox and when I click that, it says "Not a Valid Win-32 Application" What's up with that?? All I want to do is remove 3.6.3 so that I can clean install 3.6.4. I tried installing 3.6.4 two different ways with failures both times. I tried to remove 3.6.3 using two different ways, and that also failed both times. == This happened == Just once or twice == I tried updating to 3.6.4. It failed both with the update and the full download, so tried to un-install 3.6.3 in control panel, then helper.exe with no luck.