No use with FF 3.6.6 Rated 1 out of 5 stars

I tried several times without success. user.js says:
user_pref("capability.policy.policynames", "allowclipboard");
user_pref("capability.policy.allowclipboard.sites", "" "");
user_pref("capability.policy.allowclipboard.Clipboard.cutcopy", "allAccess");
user_pref("capability.policy.allowclipboard.Clipboard.paste", "allAccess");
but when I trie to paste from World to my email box (in HTLM) I continue to receive that exasperating message:
Unprivileged scripts cannot access Cut/Copy/Paste programatically for security reasons. Click OK to see a technical note at which shows you how to allow a script to access the clipboard.

This review is for a previous version of the add-on (0.6.2). 

Is the add-on enabled in Firefox? Does it work on other sites with editing capabilities? does not look like a usable url...