Which effect is it (As in, what was it called when you doownloaded Ex. Z-Saber)? The answer to this problem is that yoou have a different region of Brawl for the effect.
I Ment everytime I add CSP's to sc_selcharacter.pac (en version) when I go to STEP 2 on CUPASH I get a error: FInal File is too big maybe it will not work, Reduce the colours.
and 1. I replaced a mario CSP with a plain black stickmen AND I STILL GOT THE ERROR. anyway to stop this :p