If the error message specifies a plugin that you know exists, the registry path may be broken.
Sometimes, Error 7212 isn’t a bug — it’s . In later PageMaker updates (7.0.1 and 7.0.2), Adobe quietly broke certain plugin calls to push users to InDesign. So 7212 might be a deliberate time bomb, now fossilized in millions of old installs. adobe pagemaker plugin error 7212