Fonts no longer available after upgrade
I upgraded my InDesign and Photoshop CC last night to 2018 and now any fonts I had downloaded are no longer available. When I checked in my InDesign 2017 Fonts folder they were actually deleted from there. I went to my backup and copy/pasted them back in, but they all have an unknown extension now and are not being picked up by InDesign. I changed their extension to be .tff or .off but InDesign still isn't picking them up. When I right-click Install an error message says they cannot install.
Why were my fonts deleted with the upgrade? And how can I get them back? I have oodles of files using oodles of fonts, that are now no longer available! HELP!
