It shouldnt but let's try this:
With Solidworks Open
Go to Tools
Uncheck 3Dcontrol from starting at launch and toolbar.
Copy the 3DxSolidWorks folder into the 3Dconnexion 3DxSoftware folder.
Open Solidworks The add-in may not be loaded.
Go to File,
Browse to the 3Dxware folder
Double click on TDxSw32.dll or TDxSw64.dll
"cant remember which file i sent you"
This will Launch the toolbar.
Go back to Tools
Make sure the 3Dcontrol; is set to start at launch and load
Open a file
Are you able to see the Button mapping Function names?
p.s is you coworker having same issue or just your system?