[Evangelion]

I REALLY REALLY REALLY REALLY need some help here, my screenapcks wont work at all i've turned to you tube videos for hlep but none of them cover the problem im having
when i try to put in a screen pack and start mugen it tells me theres an error reading it like today i tried installing the Marvel Vs Capcom 2 screenpack and when i tried to start my Mugen it said "Assert failure in spr-lib.c line 560" I have no clue what that means can some one please tell me how to fix this I DONT WANT TO BE STUCK WITH ONLY 10 CHARS ='[