re lost functionality in 10.0.1 Rated 3 out of 5 stars

Yep, this add-on prevents any but the very first tab from being accessible in Firefox 10.0.1 and should come with a warning to that effect. But to be fair, it's still a good editing tool for broken or missing icons and, as such, should still be a part of your toolbox. Just install it and then go into your Add-ons Manager and disable it. Later on enable it only when you want to limit your session to these repair activities. Then go back in and disable it again. Everything's fine with it disabled.

{Maybe when BobDawg fixes this problem with the code, he'll drop a note here to that effect so we'll know to install the new version.}