Node signal issue

Doing a simulation for a company, I am using signals between nodes to help with times, the first time it works however, it stops with no error warnings. I am also using two human operators for this process and need them to alternate grabbing the products coming down the conveyor. can anyone help with these issues?

is your WaitTrigger on True in the property of the waitSignal-statement?

Yes, does that matter?

after your picture you wait for the waitSignal (green dot)
Even if the signal is already true, you wait for it to be sent (because waitrigger is true)
I think you were on another statement in the routine when it was sent and might have missed it?

from help file: