Gray Alliance

Hello! I'm playing your company's game, Heroes of Might and Magic V. I encountered a bug: In the third mission, Cyrus doesn't teach the summoning spells: the Amulet of the Elements at the start doesn't grant the Summon Elemental spell, and the Pyramid, which grants the Summon Phoenix spell, also doesn't grant that spell (although the message saying that the spell has been learned appears at the top of the screen). Could you suggest how I could overcome this problem?