Great diagnostic suggestions, Jeremy, as your steps helped me narrow it down!
First you proved I could deselect all and then select more than 13 modules starting from the bottom of the list, so it wasn’t a number of modules issue.
It turns out the 14th module from the top was preventing the remainder of the modules in the list from being shown: en-kolibri-index
In order to give the educators the complete set of modules, I simply selected every module in the list. You told me that Kolibri wasn’t going to work, but I didn’t realize there was a small “Kolibri index” module, and my guess is that it is abending when there is no Kolibri installed.
I think the box is ready now to go back to Tanzania on Sunday.
Thanks for taking the time to help!
. . . . . . Ken