Newbie file/mesh question

[Hobie Dodds]

Hi there, I just discovered the game yesterday, and it seems very interesting.  I spent all day yesterday trying to acquaint myself with the ins and out of it.  Last night, using Alex B.'s EZ Hero tool, I was able to connect his Abomination and golden age Sandman hero files to appropriate meshes.  This morning though, I tried to connect his golden age Atom and Wildcat hero files to meshes but nothing shows up in the window when I try to.  I can change the Abomination and Sandman to different meshes, including the Atom and Wildcat meshes which are working.  Please advise, thanks