Cumulus download zip does not have a Cumulus.ini as it gets created from the first time install settings. Cumulus is designed to run with a weather station and all its available sensors. I suppose it could be added as an additional setting (if that were even possible).My conclusion: The NoSensorCheck should preferably be included by default in the Cumulus.ini file.
The Cumulus.ini you attached had NoSensorCheck=1 but the MXDiags had NoSensorCheck = 0
(By the way, you should edit or remove the attachment to remove FTP login info!)
Possibly you edited the Cumulus.ini with CumulusMX running and any manual edit in the .ini file would not stay when shutting down Cumulus.
Here is discussion on somewhat similar issue from the early CumulusMX viewtopic.php?p=113517#p113517
Enjoy,
Paul