Comment 6 for bug 769788

Keyerror is raised when a mapping (dictionary) key is not found in the set of existing keys. It tries to access a non-existing dictionary key;

Line 195 in poweremail_send_wizard.py reads: screen_vals = self.read(cr, uid, ids[0], [],context)[0]

Do these values come from the template? Strange that this line did not change comparing to older revisions and always worked.