I also have this issue, this is my txt error reporting in case it might help you guys.
couatl v3.2 (build 3883)
panic log started on Mon Dec 18 10:44:24 2017
problem raised by addon <unknown>
Traceback (most recent call last):
File ".\common\sceneryAddOnMulti.py", line 1013, in checkAirplane
AttributeError: 'KCLT' object has no attribute 'onEnteredGate'
{'Airport': 'KMIA', 'Requested parking services to': 'Gate G 14', 'User Pos': (25.818247667462753, -80.33944522265058, 239.875 m, 239.003 m, 119.28773672578764)}
Traceback (most recent call last):
File "<string>", line 22, in OnIdle
File ".\common\sceneryAddOnMulti.py", line 1013, in checkAirplane
AttributeError: 'KLAS' object has no attribute 'onEnteredGate'
Added Menu SubItem "Customize airport positions..." (parentId 82, id 75)