Just a few quick steps to cover the basics errors:
1. When you moved the TD from a VM, did you make sure that the VM is powered off?
2. Try to see if the VM is still having any /dev/sg mapped inside it.
3. Power off the VM. Disable to device from the passthrough, Remove the device from the VM and try to power on the VM.
4. If you have removed the device from the VM, look for the entry in the vmx file and see if the device is still mapped after powering on also.