HaloMods "Classic" Read-only Archive

i am following the video tutorials for hek and i'm on tut 7. i'm up to the part were u create the tags for the level and this is what showed up

C:\Program Files\Microsoft Games\Halo Custom Edition>tool structure levels\splinter splinter

Couldn't read map file './toolbeta.map'
building intermediate geometry...
building collision geometry...
### ERROR couldn't update edge #923 (red).
### ERROR couldn't update edge #896 (red).
### ERROR couldn't update edge #835 (red).
### ERROR failed to build collision geometry.
### ERROR failed to import collision bsp.

why am i getting all those error's, does anyone know what i did wrong?

This is typically caused by faces or surfaces that are duplicated or shared between objects.The faces have shared vertices and\or faces.
A good example would be 2 identical cubes that have been moved together such that they each share one side. The cubes should either be moved apart, or merged together which would include the removal of any duplicate or illegal faces.