I was playing with this plugin to learn a bit how to write electrum plugins.
Can't understand how to make it work with electrum 1.9 on ubuntu 12.04
The only change I can see from enabling the plugin is on the right-click menu in the Receive tab there appears "Select for PaperGen". Selecting it appears to do nothing.
Did you check Tools-> PaperGen?
Yep, nothing there that wasn't there before.