monline

For some reason my "acidfree_hierarchy" table (part of the Acidfree Drupal module installation) contained a lot of records in my DB with a "child" value that has no corresponding record in the "nodes" table. Here's how to get rid of these records ...

You can check for the existence of such records with the following query:

And delete these records with this:

PS: I suspect that the mass delete functionality might have left those records there.