No matter which file I try, when I go to export with i5 I get this warning. Is this common?
Whether Yes or No I still then get the "loading..." and it never goes any further.
I use In5 on multiple machines, all using the same copy of InDesign 2020 and it only happens on one of these PCs. I have uninstalled and reinstalled InDesign, but unfortunately at our institution, I cannot upgrade my copy of InDesign.
It appears this is a bug with InDesign. Try running InDesign as an admin (at least once). https://community.adobe.com/t5/indesign/doscript-error-unable-to-load-adobe-indesign-type-library-version-1-0/td-p/11264794?page=1