I recently upgraded to Kali Sana and have ran into a few errors with my scripts and i have attempted to troubleshoot but I believe the error is within the upgrade.
As you can see now whenever you try and stop a device with airmon-ng it gives you that error. If anyone has any ideas how to fix it let me know. Also now my wireless card is giving me new errors that can be corrected using airmon-ng check kill. These did not exist however before the upgrade.