Wait ... who told you that? As has been said already, ExGFX is part of LM, and as long as you're using the latest version of LM then it should be fine. Have you tried it yourself or are you just going off of something you read somewhere? Trust me, you should have no problem with it as long as you're inserting SA-1 correctly, so try it again on a clean (expanded) ROM for
yourself and tell us how it goes.
As for the powerups tool, I'm not sure there - it's not in the tools section, so if it's not compatible with SA-1 then that's probably why. I haven' tried it for myself, but if someone knows for sure whether or not that works with SA-1 then they can jump in and confirm that.
E: Just checked, and lx5's powerups tool should very much be compatible with SA-1. There's gotta just be something wrong with your ROM, or the way you're using the patch.
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