My plugin loads media into empty events and adjusts the event length to match. This process is currently broken in Vegas 15 (Build 416) and in Vegas 16 (Build 424). Disabling the So4 Compound Reader completely rectifies this issue.
This is what happens to processed videos. The media loops due to the incorrectly reported media length but it's intermittent, usually just one or two or none of the ten clips are compromised but this shows how bad it can be.