Yes ... I get the same results with Fx 22.0. It does, however, work with Fx 21.0. It would appear that the Mozilla Rapid Release
mandate has once again taken another victim.
Now that I am on summer hiatus I finally have some time to update my extensions. I'm currently working on PEP v4.0 and should have it ready in a week or two. When it is released, it will first be available on the Paste Email homepage
and (after it is reviewed) on the Mozilla Add-ons page