Errors when typing commands after conference close

[goddard@…]

The following bug report has been submitted:
Platform:        Windows-10-10.0.17763
ChimeraX Version: 0.92 (2020-02-27)
Description
After closing a conference then trying "meeting start" I get an error.

Log:
UCSF ChimeraX version: 0.92 (2020-02-27)  
© 2016-2020 Regents of the University of California. All rights reserved.  
How to cite UCSF ChimeraX  

> open 2719 format "MDL MOL/SDF" fromDatabase pubchem

PubChem entry 2719  
  
  

> conference start cxconference.rbvi.ucsf.edu/ctest

In conference cxconference.cgl.ucsf.edu:443/ctest as "True"  

> conference close

> meeting start

Meeting at vive or 169.230.21.39 port 52194  
Traceback (most recent call last):  
File "C:\Program Files\ChimeraX-Feb-27-2020\bin\lib\site-
packages\chimerax\core\triggerset.py", line 130, in invoke  
return self._func(self._name, data)  
File "C:\Program Files\ChimeraX-Feb-27-2020\bin\lib\site-
packages\chimerax\meeting\conference.py", line 409, in _ran_command  
self._send_message(msg)  
File "C:\Program Files\ChimeraX-Feb-27-2020\bin\lib\site-
packages\chimerax\meeting\conference.py", line 480, in _send_message  
self._mux_node.send(msg, receivers=identities)  
AttributeError: 'NoneType' object has no attribute 'send'  
  
Error processing trigger "command finished":  
AttributeError: 'NoneType' object has no attribute 'send'  
  
File "C:\Program Files\ChimeraX-Feb-27-2020\bin\lib\site-
packages\chimerax\meeting\conference.py", line 480, in _send_message  
self._mux_node.send(msg, receivers=identities)  
  
See log for complete Python traceback.  
  

> meeting start

Meeting at vive or 169.230.21.39 port 52194  
Traceback (most recent call last):  
File "C:\Program Files\ChimeraX-Feb-27-2020\bin\lib\site-
packages\chimerax\core\triggerset.py", line 130, in invoke  
return self._func(self._name, data)  
File "C:\Program Files\ChimeraX-Feb-27-2020\bin\lib\site-
packages\chimerax\meeting\conference.py", line 409, in _ran_command  
self._send_message(msg)  
File "C:\Program Files\ChimeraX-Feb-27-2020\bin\lib\site-
packages\chimerax\meeting\conference.py", line 480, in _send_message  
self._mux_node.send(msg, receivers=identities)  
AttributeError: 'NoneType' object has no attribute 'send'  
  
Error processing trigger "command finished":  
AttributeError: 'NoneType' object has no attribute 'send'  
  
File "C:\Program Files\ChimeraX-Feb-27-2020\bin\lib\site-
packages\chimerax\meeting\conference.py", line 480, in _send_message  
self._mux_node.send(msg, receivers=identities)  
  
See log for complete Python traceback.  
  




OpenGL version: 3.3.0 NVIDIA 430.39
OpenGL renderer: Quadro P6000/PCIe/SSE2
OpenGL vendor: NVIDIA Corporation

[Tom Goddard]

Seems that after conference close it is still trying to send commands.

[Conrad Huang]

Fixed in d87ae6ba9. Forgot to turn off command relay when leaving conference.