Relm's Sketch edit

What went wrong?

Anyone's guess really. I'm going to guess that the ROM you're patching the ASM to probably has a header, in which case you'd want to remove the ; character from the ASM file at the top where it says ;header. The ; before the header is saying that it is not headered, which would cause it to patch 200 bytes off causing...bad things. Or, alternatively you can remove the header with a hex editor or SNEStuff and try the ASM patch again. If you're not sure what a header is, to quote the wiki:

A header is 0x200 bytes of padding at the beginning of the ROM. There's not really a functional difference between a headered and an unheadered ROM, but you have to take into account the extra bytes when you are hacking. We suggest you use none and apply one only when you are applying a patch requiring one or use an editor requiring one. It will simplify your life. You can add / remove headers with an utility like SNEStuff.

If this is not the issue of your crash, I am not sure.