Unfortunately... Bewertet mit 3 von 5 Sternen
I've been using this great add-on for quite a while now. Unfortunately, it prevents Adblock Plus (starting from version 2.2.3) to show both in tools menu and add-on bar, as well as Add-on Compatibility Reporter, only in add-on bar. I know I shouldn't be writing about bugs here, but I thought I had to inform people using Adblock Plus as well as MasterPassword+. They have to revert to Adblock Plus version 2.2.2 so that it still shows like it's expected.
Oh I forgot: everything works fine in Thunderbird using both add-ons.
Regarding Adblock Plus, MP+ is not the cause, it's ABP issue.
As of Add-on compatibility reporter - I'm not quiet sure why would anyone need it in the add-on bar in the first place...but anyhow, it also known to not properly being added to addon bar, it doesn't obey user's customization, by resetting it's location after each browser restart. Maybe this issue is related..