It's definitely illegal to distribute hacks for money, but I'm not sure about what we do here. In any case, there's no way you'd get sent to jail for distributing intellectual property. Just sued/fined (not that that'll happen either).
The only things that could desync and crash the game would be stuff that actually changes gameplay (PSAs, B+, etc.). But yeah, if you have the same stuff then there'd be no problem.
1.3.5 is outdated. Although that's not necessarily the problem, I recommend upgrading anyhow. At what point does the game freeze at? When you select a character?
I have a simple request: I would like an armorless Marth, but with everything else (cape, tiara, sword, sheath, back belt, etc.) intact. I have an idea for a vertex hack. Thanks. ^^
Your Sack textures are totally awesome and that's a pretty spiffy sword for Link. ^^
Also, I have a question about Vertex Box (which we should make a separate thread for) when I open up the extracted .3ds in anim8or, nothing happens. A little grey selection-esque box appears, but that's it.