finding triangle windings...

 

finished in 13 seconds

 

assigning primary lights...

 

splitting windings into lightable areas...

coalescing coincident windings...

 

-----------------------------------

 

after this nothing else happens? any reason why

finding triangle windings...

 

finished in 13 seconds

 

assigning primary lights...

 

splitting windings into lightable areas...

coalescing coincident windings...

 

-----------------------------------

 

after this nothing else happens? any reason why

I don't know much of bo3 but as long the timer is going nothing is wrong, some pc's need a lot of time especially when you compile the first time.

im now getting this error

ERROR: MAX_MAP_TRIANGLES (3072000) exceeded

im now getting this error

ERROR: MAX_MAP_TRIANGLES (3072000) exceeded

The error is pretty straight forward, you have too much triangles in your map, the maximum I would recommend would be something around 2000000 tris for a good computer in a modern engine(certainly not Radiant), try optimizing your map, remove high poly models, reduce patch detail, caulk useless brush faces.
Lol but getting this error really means you did something very bad.
Inside Radiant there is a debug view named Try Densit, use it to keep track of wich place have too many polygons.