Is anyone here knowledgable about M.U.G.E.N.?

Me & a friend are making a Marth for M.U.G.E.N. 1.0, and I finished all the files except sound, & I can select him fine (although I messed up the small portrait with the big portrait), but when I actually try to play as him, I get this error:

Error message:
Could not open file:
Error loading chars/Marth/Marth.def
Error loading p1

What do I do?

EDIT: Now I get this error:

Error message: Undefined command label: "F, a, x, a, a"
If not misspelling in CNS, check CMD
Error parsing triggerall
Error parsing [State -1, Dancing Blade]
Error in [statedef -1]
Error in Marth.cmd
Error loading chars/Marth/Marth.def
Error loading p1

Library error message: Died parsing command = "F, a, x, a, a"

EDIT 2: I fixed all the errors causing it to not run, but now I realize that it runs poorly. The transparency colour isn't transparent, the animations are jerky, the jump height is too high, & most glaringly, they never attack. It's at this point that I'd give you the files so that you could see for yourself.

....That sounds...difficult.
Did you like, double check all the coding and stuffs?

I know of MUGEN but can't play it.

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I'll TRIPLE check the coding! I'll even quadruple check, if I have to.