v3 Arcade 1.1.1 has been posted.
I was not planning another update this fast but the problem was important enough to get this worked on as a priority item and to get the update available to the v3 Arcade community as soon as possible.
In a nutshell... if you have been experiencing problems where certain games seem to randomly display a "No Permissions" error instead of saving the scores, you'll want to install this update.
Please note: If after installing the update you still get the occasional report of a user having a problem, please ask them to clear their browser cache before trying again. The code changes should kick in immediately without needing them to clear their cache, but just in case...