Hi @rudhamstile,
I found some information on the 3DConnexion website that this error occurs when the drivers for a Spacemouse have been installed and have been associated with the application.
They recommend reinstalling or restoring defaults on the driver, or disassociating the application in the driver settings.
In AutoCAD OPTIONS, under System, there is a section for pointing devices. Check to see that the Spacemouse or any of its components are not selected. I found this Autodesk Knowledge Network article for the settings available in AutoCAD for it.
Please let us know if that helped.
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All the best,
Cheryl Buck
Technical Support Specialist

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