Orchestral Companion Strings won't record in Pro Tools

I just got the Orchestral Companion Strings, which sounds great, but there appears to be a major issue with Pro Tools (12.7). I can play the strings fine in stop mode but once you engage play or record in Pro Tools, no MIDI goes to the instrument - obviously making it unusable. I tested it in Logic Pro and it recorded fine.

Anyone know the fix for this?
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