Notice: Undefined index

[Maskatu]

  $custom_meta = get_post_custom($post->ID);
  $instructions = !empty($custom_meta['custom_meta_instructions'][0]) ? $custom_meta['custom_meta_instructions'][0] : NULL;
  $difficulty = !empty($custom_meta['custom_meta_difficulty'][0]) ? $custom_meta['custom_meta_difficulty'][0] : NULL;
  $gamefile = !empty($custom_meta['custom_meta_gamefile'][0]) ? $custom_meta['custom_meta_gamefile'][0] : NULL; 

Merge brici: fara erori, valorile se salveaza, nota 10!
Multumesc man!

--- Later Edit --- (ca mi-a fost lene sa apas "Edit")

Ceva faci gresit. Daca nu rezolvi pana diseara te ajut eu dupa ora 19....

Rares, am rezolvat aplicand sugestia de mai sus a lui @casperel.
Multumesc mult oricum!