Ok Scott I reverted back to my backup of bp-course-template.php and now the plugin is working like a charm.
Now let me make one more extended test in order to verify this.
In the meantime regarding the other issue I had, when a student skips an entire quiz, the the instructors cannot mark it at all, it appears empty on the submission page. This was supposed to be fixed but this is still the case. Can you please check this as well?