Thank you for your help! I've checked again and sure nothing overwrite the output files, and no any meshes overwrite dyndolod's meshes. But since you mentioned that don't install the SDO patch of ICW, which I didn't install because I don't use SDO, and I try to install it and let its bto files overwrite the output files to see what will happen. Then... It's so odd ! I can see the compeleted lod again, no idea why... (just only the bto files in SDO patch overwrite output files) ------------------------ Edit: Now I just try loading ICW below dyndolod output files (I'm using MO), and still can see the whole college lod. looks slightly different to the SDO patch