Don't worry about that. SRB2 always points to the wrong lumps when there's a error. Most of the time its because of the OBJTCFG lump, or because of other images than the character frames, like the 1P pic or the face pic. I'd recommend taking a working character wad and replacing the sprites with your ones. Then you can edit the S_SKIN, 1P pic/SOC, and all that stuff.