All Singleplayer Modes Freezing! (Help Please)

[doublek642]

For quite a long time now, I haven't been able to play All-Star Mode. The game freezes upon selecting a character - it's a silent freeze. Subspace Emissary and Classic mode both freeze randomly in the midst of gameplay, and Multi-man Brawl freezes after about a minute or so of playing.  I am currently using Riivolution v1.04 via BeyondYou's Brawl Launcher, but I have still had some of these problems when I was using Gecko OS. I am using PhantomWing's Stage Expansion Code if that makes any difference. I've heard that apparently that may cause the problem, but I would still like to ultimately discover whether it's fixable or not. The game gets a bit boring when all you have is group Brawl. Any help will be greatly appreciated.

EDIT: Well, no one seems to be helping me. I suppose I will attempt to solve the problem myself. I appreciate the lack of assistance. -_-
If I succeed in figuring out a fix for this, I'll let it be known...