get_terms not working in theme options panel

Hi guys

I have this little script that I am using to populate a list in my theme-options panel:

 $myterms = get_terms('portfoliocats', array('hide_empty'=>false));
$getTerms = array();
foreach ($myterms as $term_list ) {
	$getTerms [$term_list->term_id] = $term_list->term_name
	}
}

This works fine when added to a page, but when trying to use this in the theme-options panel, it returns nothing. Any thoughts?

The same code works fine for getting categories:

$categories = get_categories(array('hide_empty'=>false));
$getcat = array();
foreach ($categories as $category_list ) {
       $getcat[$category_list->cat_ID] = $category_list->cat_name;
}