ComicsPress/Easel: Navigation buttons not working

I have ComicsPress and ComicsEasel on my site, https://www.bohicablues.com, and my navigation buttons have been acting strange. Basically every comic posted for the last couple of weeks acts like it is the last, most recent comic, and there are no more following. The “next” button doesn’t highlight, nor does the calendar highlight.

On the other hand, all past comics highlight fine, and the “back” button works fine. If you go to yesterday’s comic (the most recent), you see everything in the past. But if you go to Monday, March 3rd’s comic, it won’t display anything past itself to today.

I have both ComicsPress and ComicsEasel working, and both sets of navigation toolbars so I suspect I have a widget conflict. Any ideas which one is better to keep and which one to trash would be helpful. Thanks in advance!