[Anywho]

Originally Posted by Yansky

Anywho, here is my code for the iViewFox extension FWIW: http://pastebin.com/JDx6dg5T - can you see any issues?

Nope. Seeing as they're not getting to the SAVE dialog, this seems to suggest that the checks on prefs.getBoolPref("enabled") aren't working - or they are but Firefox isn't passing the correct value back to you (damaged user profile?)

Also, I just noticed that a user posted some info in a review here: https://addons.mozilla.org/en-US/fir...90505/reviews/
Something about private browsing mode. Perhaps there's a setting that's getting messed up or summin.

In private browsing mode you do get a "new" user profile, don't you? This would suggest an issue with the user's profile. A test, I guess, would be to see if a new vanilla user's profile has the same issue as well. Other possibilities - other add-ons interfering?