INS0MN1A

First of all, I want to say that I'm newbie in creating mesh clothes, and there are a lot of things, that I still don't know. I made a top in marvelous designer and rigged it in blender. I downloaded the top in second life and bought a script to create a HUD for it. This one https://marketplace.secondlife.com/p/BoSH-Mesh-Universal-Plus-HUD/5433671?id=5433671&slug=BoSH-Mesh-Universal-Plus-HUD I read the instruction and tried to do it for example item and it all works! But... not for my top. I've done everything the same, but no textures applies (I attached the texture by editing top, and it's ok). I'm definetely sure that the problem is in my top, but what is the problem I can't understand. Also I noticed that my top has no faces number, there is "ALL_SIDES" instead, maybe that is a problem? Please help me to figure out what is wrong. Thank you.