App exit - AttributeError: 'NoneType' object has no attribute 'wid'

[imirzov]

INFO: C:\Users\ihor\Downloads\cae\bin\cgx.exe -c C:\Users\ihor\Downloads\cae\examples\default.inp
ERROR: New slave window starts too slowly.
ERROR: Can not get slave wid.
ERROR: Nothing to align - slave WID is None.
WARNING: No slave window.
WARNING: No slave window.
WARNING: No slave window.
INFO: Started in 11.3 seconds.

Traceback (most recent call last):
File "c:\Users\ihor\Downloads\cae\src\cae.py", line 97, in
wf.kill_slave()
File "c:\Users\ihor\Downloads\cae\src\gui\window.py", line 187, in kill_slave
ctypes.windll.user32.SetForegroundWindow(self.sw.info.wid)
AttributeError: 'NoneType' object has no attribute 'wid'