I bought a plugin to help proof a book about to go to print - the plugin did its job. However after using it for 2 months, it was no longer required.
Now any document created during that time opens with an error "the document XYZ uses one or more plugins which are not available on your system".
If I proceed, the document opens - but the first editing action causes ID to freeze and I have to kill the process.
is there any way to find the offending "missing plugin" and strip it from the system?
The problem seems to be with the file, as when I send the file to someone else who has never used the plugin, they get the same error. It also seems to have migrated to any default document I create.
This walk-through looks far more scary than it is, but should hopefully help you locate the plugin and remove it (deeply) from your system:
They do mention that it can sometimes be fixed by reinstalling and then fully uninstalling the plugin, in case there was some leftover/corruption from before.
Please let us know how things go!