Object reference not set to an instance of an object.

2018-12-29 10:08:59 - ISY NodeLink Server v0.9.26 started
2018-12-29 10:08:59 - OS: Linux raspberrypi 4.14.79-v7+ #1159 SMP Sun Nov 4 17:50:20 GMT 2018 armv7l GNU/Linux
2018-12-29 10:08:59 - Mono version: 5.18.0.225 (tarball Fri Dec 21 19:58:41 UTC 2018)
2018-12-29 10:08:59 - Web config server started (http://192.168.1.19:8090)
2018-12-29 10:09:00 - ISY resolved to 192.168.1.70 (5.0.14)
2018-12-29 10:09:00 - ISY Node Server config detected (profile 2)
2018-12-29 10:09:04 - ISY Error: Error getting Program list - Object reference not set to an instance of an object.

I am getting the above ISY error when I start Nodelink. I don't think this is causing any problems but I have been reviewing all of my ISY programs for the cause without success. I tried increasing the logging level of Nodelink to try and discover which ISY program has the problem but never see more than the error above.

I/O Guy, What is Nodelink trying to tell me here? 

Thanks for all your hard work in creating this product!!!