I'm experiencing issues when creating premixes using the bonus core 1 and bonus core 2 downloads for Xtrain. Both downloads import into the Workout Blender and show chapters. If I create a premix that begins with or only contains chapters from these workouts, the workout blender freezes at 80% and the video never gets created. If I create a premix that uses chapters from other workouts and includes a chapter from the bonus core workouts, the premix is created but it skips over and does not include the bonus core chapters. Any ideas?