I used to use this addon a lot; I even felt addicted to it. However, since it has quit working with e10s, I have nicely readjusted to the old way and it's working nicely.
I was looking at prefs.js and saw all the custom settings for autocopy and came here to see if there was any update. Since it appears to have been abandoned, I will now go to about:config and reset all the user set entries for this so it will go away completely. ;-(