That is why you should avoid upgrading After Effects in the middle of a project at all cost.
(trying to open 12.1 (CC) project in latest 13.2 (CC 2014) = FAILED)
Ouch. Just like inadvertantly putting your hand on a hot stove, it's a mistake you only make once. That's the very small silver lining in this.
Can you open that project in version 12 still?
What about the auto saves or incremental project versions?
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