Sorry for polish postgresql ;). Relation vocabulary doesn't exists. Problem is database type interdependent (table prefix is missing)
* warning: pg_query() [function.pg-query]: Query failed: ERROR: relacja "vocabulary" nie istnieje in /var/www/drupal-6.16/includes/database.pgsql.inc on line 139.
* user warning: query: SELECT * FROM tableprefix_term_data td,vocabulary v where v.module='image_gallery' and v.vid=td.vid order by td.tid DESC in /var/www/drupal-6.16/sites/all/modules/imgupload/imgupload.module on line 158.

I'm attaching a patch to this issue.

CommentFileSizeAuthor
imgupload.module.patch720 bytesorcus