I have this problem when opening the program:

Traceback (most recent call last):
File "Detect&Monitor6.py", line 2909, in <module>
File "Detect&Monitor6.py", line 2904, in main
File "Detect&Monitor6.py", line 2145, in __init__
File "Detect&Monitor6.py", line 529, in StartInsim
NameError: name 'exit' is not defined