Assigning to Davo: there is a group of events ("YEAH_IT_DOES") as a subevent to another ordinary event. In the exported data an ENDEVENT token follows the event with a group under it, which is incorrect, there should be a BEGINGROUP there, for the group under the event. But there isn't so it seems the group genuinely is not exported so the runtime never sees it.
As a workaround, not using groups of events nested under other events will probably fix this.
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runtime group error
Assigning to Davo: there is a group of events ("YEAH_IT_DOES") as a subevent to another ordinary event. In the exported data an ENDEVENT token follows the event with a group under it, which is incorrect, there should be a BEGINGROUP there, for the group under the event. But there isn't so it seems the group genuinely is not exported so the runtime never sees it.
As a workaround, not using groups of events nested under other events will probably fix this.