Hi, I have managed to fix the Infinite Combo of some old window Mugen characters. Some of the Mugen creators did not update their characters to Mugen 1.0 or 1,1 and the characters (mirror match and characters created by same creator) can perform infinite combo at the end corner of the stage such as this: (http://i420.photobucket.com/albums/pp286/danny_071/10.png) you can perform it by cornering your opponent to the end corner of the stage and keep doing weak punch or kick. There is a solution for this, if you open the character's cns file and scroll to the [statedef -2] section, you can see this section:
[State -2, 100]
type = Width
trigger1 = p2Dist X >= 0
edge = 3,-3
[State -2, 100]
type = Width
trigger1 = p2Dist X < 0
edge = -3,3
Delete or quote these two block of code, save it and you are done
Characters that have this problem are:
Beppu: http://sw20w.web.fc2.com/
Ukege: http://sokowodokunda.ma-jide.com/
Rei: https://onedrive.live.com/?cid=CBB6A41F26F3B810&id=CBB6A41F26F3B810!105
Akutagawa: http://www.geocities.jp/akutagawa_s154/