bug can be replicated. have a trigger that stops a video panel onvideoend. then have two triggers set to playindex. click one of the play index triggers video plays fine but when the second play index is used the game crashes. in the output log.
[Error:7/11/2018 1:31:14 PM] User code has thrown an exception, when calling Stop on VRCVideoSync
[Error:7/11/2018 1:31:14 PM] Exception has been thrown by the target of an invocation.
[Exception:7/11/2018 1:31:14 PM] The requested operation caused a stack overflow.