There are several objects from maxis which have more than one texture. When I clone one of these in order to make a new mesh, I put my texture, all works good, but when I test it at the game, I see the textures from maxis also into my object. What I want to know is how to avoid this. I want my object with only the texture I made.

Thanks

Sounds like you didn't update the MMATs properly. When getting new GUIDs, you need to click the "update MMATs" with the main GUID (usually the one with the shortest name). You can also do it manually by pasting the new GUID into the value field of objectGUID in each MMAT and committing and saving.

Thankyou very much