Tree Grid View Show Editor Problem

Good day.  When I try to add a Tree Grid View, the editor does not display.  It only shows a blank page.  The problem seems to be similar to this problem, Requirements editor not showing anything?, but I didn't see an answer.  This is something that has happened in the last month or two (been a while since I added a Tree Grid View).  My old ones display correctly, it is just the ones I add now.  Thank you for any help.