Exception in module vizjoy

[fordprefect]

Dear all,

while modifying our scripts I ran into an exception from the vizjoy module. While it is not much of a problem because the exception is thrown when closing the simulation, I'd like to get rid of it because it could obscure a true error. The programming goes like this:

script.py

import A
   :
A.go()

module A.py

import B
import vizjoy
   :
status = True
   :
def go():
     :
  B.start()
  status = ...
     :
  viz.go()

module B.py

import A

def start():
  """does some inits and install callbacks"""

def react():
  if A.status:
    :

I found no way around this circular import of modules because I need access to the current value of A.status in Module B. I tried a getter-Method in A but this also throw me this exception:

Exception TypeError: "'NoneType' object is not callable" in <bound method _JoystickCleanup_.__del__ of <vizjoy._JoystickCleanup_ instance at 0x04787418>> ignored

Appreciate any hints, ideas and even solutions...
BR Walter