It looks like there may be a couple of units out there that may have a software bug that prevents lists screens from being displayed. The bug does not affect the flying qualities of the EFIS-D100, only the ability to view checklists.
It can be fixed by uploading the following file to the EFIS-D100 via the Dynon Product Support Program.
http://dynonavionics.com/downloads/EFIS_D100-PATCH_OVERWRITE_LISTS.efs
The Dynon Product Support Program, and instructions how to use it to upload software to the EFIS, is available in the EFIS-D100 downloads section of our website.
After uploading the above file, check that the "LISTS" button works. If it does, you can then use the support program to edit the checklists to your liking.