If I finish the quest "The Bronze Beneath the Lake" at Wenan, I'm offered no option to gain an invitation.
I also finished Rogue Knight.
I started at 3.02 and updated to 3.03 today.
A savegame before talking to Wenan can be found here: https://dl.dropboxusercontent.com/u/58294750/7ceb3067-5651-420f-bf0c-f960a7421f3c%20quicksave.savegame
Thanks in advance for your help.