ascent does not use vmaps they are for mangos
Ascent with collision does use vmaps.
And your problem is you didn't create a "vmaps" folder in the folder you ran "vmap_assembler" in.
ohhh then i must execute vmapextractor, and then must put vmap_assembler in building folder? and run vmap_assembler?
You copy the 2 exe's to your wow folder.
You make a folder called "vmaps" in the wow folder.
You run the extractor. It will make a folder called "buildings".
You run the assembler, it will populate the vmaps folder with the vmaps. If you don't make the vmaps folder, it'll run for a while, but do nothing.