When in the description of the ars magnus requirement( like Gemini or Capricornius) is written for arma base: "ninguna"( or "nothing" i had a spanish version of the book ) , it' s unecessary to have a weapon module or you must have a weapon module of the weapon used( like Weapon: gemini or Weapon Capricornius)?

When there's written NONE, the cost of the Impossible Weapon (or at least that's how I rule it), includes the "module" for it.

that's what i do too. when it says none it just seems to mean there is no regular listed weapon to go off of.