I load a taxonomy term in the edit form via the following code:
module_load_include ( 'inc', 'taxonomy', 'taxonomy.admin' );
$vocabulary = taxonomy_term_load ( $tid );
$form = drupal_get_form ( 'taxonomy_form_term', $vocabulary );
The vocabulary has a custom text field with unlimited values, so this appears on the form, but when I click the "add another item" button, I get:
Call to undefined function, taxonomy_form_term_validate() in [truncated path].../form.inc" on line 1513.
I appreciate any guidance I can get in solving this.