Tim -
Thanks for your help. I resolved the problem. It was a custom theme issue. We are running Moodle 3.1.1 with the Essential theme. When we upgraded everything over the Summer from Moodle 2.9 to 3.1 we thought the Essential theme was upgraded as well. It wasn't and we were running their 2014 version. That was manually upgraded from Essential 2.7.9.5.2 to 3.1.0.9 on our server this morning and all seems to be running smoothly. We now have a panoply of color adjustments to address, but that is not mission critical for the next week of classes.
Thanks again for your prompt response, we greatly appreciated it.
Regards,
James Rodewald