After InDesign is updated to 21.5.1 the FontBase plugin isn’t loading with the error message:
Adobe InDesign does not recognise
FONTBASE-WIN-INDESIGN-2026.PLN as a valid plug-in. Please reinstall the FONTBASE-WIN-INDESIGN-2026.PLN and restart InDesign.
Hello @srf, thank you for your post and welcome back to the forum
Have you perhaps already tried removing the plug-in and re-installing it via the FontBase Settings page?