Titanfall 2 Engine Error

The game crashes out 100% of the time on the loading screen for the campaign mission Trial by Fire.  The reported error is as follows:

Code expects a status effect of type 'turn_slow', but it has not been defined in 'scripts/status_effect_types.txt'.

I tried reporting this direct but my ticket was closed off without a response so I'm hoping someone here might be able to help!