I have a One-to-One Relationship with my custom Module to Product Catalog in order for users to create unique products which will always be in the catalog and link that product to that custom module record. However, the sub panel is not appearing on the custom module DetailView or worse still, the Studio Module.

Look within Sugar Log and found no Fatals. Changed the Logging to Debug and found this error:
Code:
10/07/10 14:54:20 [1224][1][DEBUG] StudioModule->getSubpanels(): getting subpanels for <CUSTOM MODULE>
10/07/10 14:54:20 [1224][1][DEBUG] SubPanelDefinitions->get_available_tabs(): <CUSTOM MODULE>_quotes= not exempt  ACL OK
10/07/10 14:54:20 [1224][1][DEBUG] SubPanelDefinitions->get_available_tabs(): no module defined in subpaneldefs for '<CUSTOM MODULE>_producttemplates' =>array (
  'override_subpanel_name' => '<CUSTOM MODULE>default',
) - ingoring subpanel defintion
10/07/10 14:54:20 [1224][1][DEBUG] SearchViewMetaDataParser: __construct( basic_search , Contacts ,  )
By default Product Catalog doesn't have subpanels in their metadata so I created a custom ProductTemplate folder within the custom Ext directories etc etc, rebuild etc etc and I successfully created a subpanel for ANOTHER Custom Module. SO I did do it before, just this time I have no idea what I can do with this error.
If anyone has ideas I would be much grateful.