Help with TriPOS and VeriFone VX690 via USB, no connection

Hi, I'm new to Worldpay, but have previously worked with Moneris.

I've installed TriPOS and am trying to use a Verifone VX690 via USB. I plugged in the device, installed the drivers, forced it to COM9. I see the device in the Windows device manager, using COM9.

I modified the TriPOS.config file (shown below) to point to COM9 and driver VeriFoneCXpi.

The device doesn't seem to be picking up any of the settings from TriPOS.config, and when I try to connect to it with the compiled sample apps, I get an error:

<developerMessage>ERROR:POST error
EXCEPTION: Could not find a Configured PIN pad tethered to the lane specified in the request: 9999
</developerMessage>

Any help or guidance would be appreciate to get these things working together.

Example from TriPOS.config:

<lanes>
<serialLane description="Lane 1" laneId="9999">
<pinpad>
<terminalType>Unknown</terminalType>
<driver>VeriFoneCXpi</driver>
<comPort>COM9</comPort>