"Illegal offset type" errors displayed on node creation pages

@celtictigger: Detailed answers to the following questions will help me enormously.

(1) Have you selected an author name taxonomy (vocabulary) on the Author Taxonomy settings page?

(2) Were you running an older version of this module prior to experiencing this problem? If so, do you remember which version?

(3) Have you narrowed this error down to only this module? That is, does disabling only this module eliminate the error on all pages that previously displayed it?

(4) On what pages does this error appear? All pages? Admin pages? All nodes? Nodes of a specific content type?

(5) If this error appears only on nodes of a specific content type, are they all content types that use Author Taxonomy? That is, do you see this error on nodes of content types that do not use Author Taxonomy?

@celtictigger:

Thanks for the answers. Some quick follow-ups:

(1) Does the content type in question use any other taxonomies, or is your author taxonomy the only one assigned to that type?

(2) Can you try creating a very basic test content type that doesn't use CCK and assigning it the author taxonomy? I'd like to make sure this isn't a problem with your CCK configuration (or CCK itself).

(3) How many terms are in your author taxonomy?

(4) You said it only appears on node creation pages. Are there any instances in which it appears on node edit pages (i.e., for nodes that already exist)? If so, it would be helpful to see a dev load of a node that displays this error. Let me know if you need instructions on how to see a "dev load." (It involves installing the devel module.)

Sorry for the footwork. I'm unable to replicate this error on my side, so it's a bit like working in the dark. Need all the help I can get!

I have the same problem. It happens in node creation preview when "Remove author names from each node's list of terms" is checked. If the node has separate teaser and full view, the errors are doubled.

I'm using version 6.x-1.6 and D 6.9. I don't use CCK.

    * warning: Illegal offset type in isset or empty in /home/okno/public_html/modules/taxonomy/taxonomy.module on line 1015.
    * warning: Illegal offset type in /home/okno/public_html/modules/taxonomy/taxonomy.module on line 1016.
    * warning: Illegal offset type in /home/okno/public_html/modules/taxonomy/taxonomy.module on line 1019.
    * warning: Illegal offset type in /home/okno/public_html/modules/taxonomy/taxonomy.module on line 592.
    * warning: Illegal offset type in isset or empty in /home/okno/public_html/modules/taxonomy/taxonomy.module on line 1015.
    * warning: Illegal offset type in /home/okno/public_html/modules/taxonomy/taxonomy.module on line 1016.
    * warning: Illegal offset type in /home/okno/public_html/modules/taxonomy/taxonomy.module on line 1019.
    * warning: Illegal offset type in /home/okno/public_html/modules/taxonomy/taxonomy.module on line 592.

Assigning to self.

More info:

I was able to duplicate the errors by by disabling free tagging for the taxonomy used as the 'author taxonomy' . The warnings do not occur if 'Tags' is enabled for the taxonomy.

The warnings are indeed happening when 'Remove author names from each node's list of terms' is set.

The warnings only occur on the 'Preview' page, not when actually saving the node.

The warnings only occur if an author is added or removed from the list of authors, not if the list stays the same and other content changes.

The warnings were being caused by the node's taxonomy being reset on line 541, even though it was already in the correct state:

$node->taxonomy = taxonomy_preview_terms($node);

Commenting that line will fix the problem. A new version fixing this issue will be released shortly.

Fixed in version 6.x-1.7