After upgrading from 0.7 to 2.1.6, I can preview an exhibit, but get a blank page when I try to edit.
Eg. url ending in "ndxzstudio/?a=exhibits&q=prv&id=35" shows the page, but "ndxzstudio/?a=exhibits&q=edit&id=35" is blank.
Currently testing how to recover old installation in lab, so no live site to show.
Any tips to how to fix or further troubleshoot?