It is not a once only time as my and a mate can never get over round 40 before the message appears. It only happens to me when I play with anyone over round 35 and so me and my mate can never get past round 55 again and cannot get to round 66 as we want. Although you get this message on Ascension it also happens on Kino der toten on xbox. Also wiping the disc does not help as it happed to several time since then.
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