I've got a relatively straightforward queued state machine with enum as my queue data type. Everything has been going well for several days, but I made some minor changes yesterday (tried undoing, thought I covered everything) and now i've got a problem with enqueuing and dequeuing certain states. My QSM runs through the first three states automatically. It then enters another state upon user input, then returns to state three. All of this happens correctly. When I try to enter the "initialize interview" state, however, the queue seems to break. Although an element seems to be added correctly (per the preview function), the consumer loop returns to the default state. Additionally, this default state is the first state, which correctly queued an element and advanced to the next state during startup. Initially, all references to the queue were by local variable for the queue, as shown on the right. As a troubleshooting measure, I tried obtaining some of them by name. This seems to help a little bit, but there are still some erratic outcomes.
One other note: If I restart labview, the QSM makes it past the "initialize interview" error, but hangs the next time the producer loop is activated, even though nothing more is enqueed. As with the above scenario, the queue cannot be changed after the consumer loop returns to the default state, even though it appears to continue looping. I'm attaching a picture of the obtain and enqueue functions where the problem originates.
