Not sure whether this is actually related to beta7 as i can’t remember to have sent Nuke jobs to Deadline when Nuke was set to proxy mode.
But i tried yesterday and got the following error output in Nuke’s script editor:
Nuke also showed the message window which is attached to this post.
Thanks for reporting this! We’ll fix it in the next release.
In the meantime, you can unzip the attached file to \your\repository\submission\Nuke\Main and overwrite the existing SubmitNukeToDeadline.py file. Then restart Nuke. That should fix the error.