I made a duplicate of the Probe's weapon, changed the range and such, even duplicated the Actor, the range works and the sound will play, but I cannot see the animation, I need help...

ive been having similar problems every time i duplicate any unit or weapon, but for me the attack animation plays, with no sound, and no projectiles are fired. as in, 70 dmg immortal spazzing with blue flames erupting from guns, drones exploding, but no noise.

You need to duplicate the probe attack actor and change the events to reflect your new unit instead of a probe. If you need more detailed instructions just ask.