hexbomb

Has anyone managed to import new character models into the game? I've managed to use the Silent Storm editor and Maya 6.0 to import back a mesh vertex-edited version of the original human model made by the developers of Silent Storm. However, when I use a new mesh and attach it to the original skeleton and import the model into the editor I get an error about a shader not having an attribute called "materialindex". How do I fix this? Is there a guide/tutorial about importing models?