Promokit Helpdesk Alysum

Catalog>Products, edit > Custom Tab Can’t empty the fields if it has some values.

Fix:
file \modules\pk_themesettings\pk_themesettings.php line 2837
delete the code

                                if (!$custom_tab && is_array($check[0]))
		        		$custom_tab = $check[0]['custom_tab'];

		        	if (!$custom_tab_name && is_array($check[0]))
		        		$custom_tab_name = $check[0]['custom_tab_name'];

		        	if (!$video_id && is_array($check[0]))
		        		$video_id = $check[0]['video'];