Why does Firefox 33.1.1 require a User Account Control dialog before loading?

I am unable to stop FF from requiring the User Account Control dialog box before it will load. I uninstalled and reinstalled a clean copy, which worked the first time, and then re-established the UAC dialog on subsequent starts. This is incredibly annoying. It has never happened before with FF. How do I stop this behavior? I will stop using the damn program if this can't be fixed.

Check that Firefox isn't set to run as Administrator.
Right-click the Firefox desktop shortcut and choose "Properties".
Make sure that all items are deselected in the "Compatibility" tab of the Properties window.
* Privilege Level: "Run this program as Administrator" should not be selected
* "Run this program in compatibility mode for:" should not be selected
Also check the Properties of the firefox.exe program in the Firefox program folder (C:\Program Files\Mozilla Firefox\).
If you can't make the changes then you need to start Windows Explorer as Administrator.

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