Hello, I have a module that copies the sale.description automatially to invoice.description.
Some time ago I payed someone to create this module. Now I have to update the module to 2.6, but I can't reach this person any longer. So I tried to update nodule by my own, but I have some problems, because I don't really understand "super" and some other things. Here is the version of 2.4: http://pastebin.com/B6Wb6H3P and this is my experiment of the 2.6 version: http://pastebin.com/JmJxHYgn error message at the moment: local variable 'Sale' referenced before
