“Due to nation-wide technical difficulties with Sony, we aren’t able to play any titles today.”
Article by the Verge: It reports on technical difficulties encountered by movie theatre chain Alamo Drafthouse which prevented them from showing digital projections, due to software problems with Sony projectors.
If you read the article, they are no longer in the business of selling theatre projection equipment.
This was probably an expired certificate. Alamo Drafthouse, like many movie theatres, probably cuts costs by not having a projectionist and lets the projectors essentially run on auto pilot, and then faced the consequences when no one noticed that their certificates had expired.