VaM 1.x How to solve AB's Timeline Exception: Timeline: External activate trigger crashed, some triggers might not have been called: System.NullReference...

[qiuweicheng]

How to solve AB's Timeline Exception: Timeline: External activate trigger crashed, some triggers might not have been called: System.NullReferenceException...

How do you usually deal with this issue?

 

[atani]

Not an error I've come across before. What did you do to make that happen?
The full error description is better, it may give more useful information.