Daryl,

Thanks for those ini files. They really helped.
I was able to replicate the error you were getting.

Error is being caused by the settings for sensors 2 and 3 on the emulated intefacekits.
Specifically, the "range of travel" settings for the sensors.
This is due to either:
(a) bug in program allowing a zero range.
(b) manually editing the ini file (never a good idea).

I suspect the problem is (a).

Here is a workaround to apply until such time as I publish rectified program.

Open your PhidgetInterfaceKitEmulation1.ini file with text editor, say, Notepad.

Scroll down to the [Sensor 2] section.
The SMin and the SMax values should not (must not) be the same.
Change SMax=0 to SMax=1000

Scroll down and do same for [Sensor 3]
Smin and Smax are both 485.
Change SMin=485 to SMin=0

Save your settings and you should be good to go.

Regards,
Alan.