When installing the 12.5.3 update, I made sure to install C primary peer, C subsequent peers, E primary peer then E subsequent. We do not seem to be getting the applicatin error bug anymore after about 36 hours of use. As it had been happening within an hour of restarting in the past I think it is resolved. I don't know if it was 12.5.3 that fixed it or that I had installed C and E simultaneously before instead of doing one after the other.