v2019 to v2020--I've got TOC or content, but not both
So we have a single RoboHELP file from version 2019 that I need to generate and lightly maintain. In a flurry of activity, our IT department tossed our CD version of 2019, and so we have only one computer that has RoboHELP 2019 and we'd like to avoid a problem when/if it stops working. To that end, I upgraded the project to 2020, and all seemed well, except when I generate the file, I get the TOC on the left, and no content on the right. Selecting a topic in the TOC pulls up the content, but the TOC disappears with no way to get it back, save for the browser 'back' button. This is true for all browsers I tried, and I've tried a number of different build options. Does anyone have any idea what may have broken, or what I'm doing wrong?
My thanks in advance for any of your knowledge.
