Hi BurrMan,
Running Windows 7 Pro 64bit.
Here is the 3dconnexion driver info:
Release Version: 3.16.3
(Driver Version: 6.16.1)
Firmware Version: 4.31

When I ran the 3Dconnexion Update Wizard it said I had the latest version.

and here are my MoI settings:

Thanks Michael,
That did the trick!

We must have been posting at the same time.

You're welcome bisenberger!

I think that at some point they changed the default rotation behavior in the space navigator driver as far as which direction controls which type of rotation.

But that setting in MoI can be used to swap the rotation motions with one another to compensate for whatever the driver is doing.

- Michael

Looks like you have it worked out...

Just for the information:

"""""""""""""Running Windows 7 Pro 64bit.
Here is the 3dconnexion driver info:
Release Version: 3.16.3
(Driver Version: 6.16.1)
Firmware Version: 4.31"""""""""

I have the same OS and release version, but, My firmware is 4.04, which has my driver version as 6.16.0...

Later.