Since modern addon managers like CurseForge often default to the "Classic" or "Retail" versions, you must specifically seek out 4.3.4 compatible files from legacy repositories:
Cómo elegir addons (criterios prácticos) addons para wow 4.3.4
World of Warcraft: Cataclysm (patch 4.3.4) is widely considered one of the classic "Golden Era" versions of the game. Because it is an older version (often played on private servers), the addon ecosystem is stable but distinct from modern Retail or Wrath of the Lich King. Since modern addon managers like CurseForge often default