Flare 2020 r3 Preview Is Blank [SOLVED]

[Chicago_HPT]

After updating to Flare 2020 r3, the preview window only displays a blank page for any topic that I try to preview. This is true for both my HTML5 top-nav output and my PDF output.

Has anyone else encountered this? Does anyone know how to fix it, or know a work-around?

Thanks,
-jeff

[Chicago_HPT]

For the record, it appears this was a combination of things. The master page for my primary HTML5 output uses a javascript function that checks for the presence of an auth_token and, if it isn't there, the page does not load. Previous versions of Flare apparently didn't run that script in the preview but Flare 2020 r3 does, so my my preview was, appropriately if frustratingly, blank.

Cheers,
-jeff