Illegal offset type in content_taxonomy_hs.module on line 293.

Using a CCK taxonomy field, Save as tag, Save term lineage, deepest level. The error showed up in node addition preview, I then noticed that the "Multiple values" flag was not automatically preselected: I believe it should have, as the "Save term lineage" option was checked... I then changed the option to "Save only the deepest term" and then back to "Save term lineage". Doing that the "Multiple values" flag got preselected, and the error disappeared. A similar error was reported in the Content Taxonomy (wrong?) queue. See http://drupal.org/node/314649