Pushback Problem With 2.8.4

[jockoflocko]

I just updated to 2.8.4 and tried a flight with the PMDG 738.  Just prior to pushback, when the ramp worker said "release parking brakes please" I release the brakes but now he immediately says to release the brakes again and the pushback does not progress.  I tried re-engaging the brakes and then releasing them, but the pushback still didn't progress.  Then I tried restarting the Coutl engine and running the entire pushback routine again.  But the same problem occurred again.  If it helps, here is the log file:

couatl v4.8 (build 5312)
panic log started on Sat Nov 11 14:43:54 2023

problem raised by addon <unknown>
Traceback (most recent call last):
  File ".\common\fsm.py", line 73, in executeDoFuncToCompletion
  File ".\GSX\assistanceServices\pushBack.py", line 1164, in do
AttributeError: 'PushBack' object has no attribute 'objectPos'
{'Airport': 'KSRQ', 'Requested assistance services at': 'Gate 45', 'Requested parking services to': 'Gate 45', 'User Pos': (27.39041950983613, -82.55341394408835, 9.31724 m, 2.46731 m, 214.06142431615234, 0.015699179843068123, 0.024434609338641167, -0.0027741616561719647, 2.553919111633301, 1.0)}

[jockoflocko]

OK, I tried another flight from another airport and I didn't have this pushback problem.  So it looks like it was just a one-off issue at that airport (KSRQ).

[virtuali]

That looked in fact like a scenery bug, possibly missing/overalled/orphaned nodes, which made calculating the pushback route impossible.