I assume that by trisouping you mean the method used on Riyadh? I think it looks inferior to patch meshes, and doing it has caused me a different error that required the -notjunc command to compile a map. I think the problem was that I had some irregular patch mesh shapes to make terrain curve around the entrance of a tunnel. This has been removed and the map is compiling again.
LCDLC Mapmaking Dept.
Maps finished: Hellhouse, Sorry, Worrior 1-20
Maps modded: CubeOrigin
Maps in release candidate: Blockforts, Cannons 1, Hotzone, Icecastle
Maps in beta: Arctica, Cannons 2, Cerulean-River, Igloo, Skygarden, Spacestation
Maps in alpha: Merlin, Totem