Have been making a map and up until now its been going fine but suddenly I got an error and the map won't vis...

LoadPortals: couldn't read c:\quake\id1\maps\map.prt
No vising performed.

The only changes I've made recently is adding entites, weapons, ammo, dm spawns...

Any help appreciated

DD

(google hasn't been too forthcomming )

Check and see if the map even compiled. Is there a map.bsp in c:\quake\id1\maps ?

If not, read the log and find out why the map didn't compile. The map must compile first before the vis process, and from the looks of what you posted, it didn't compile so there is nothing to run vis on.

Check if there is an entity (btw: everything else than brushes are entities) outside the map.

Aha!! as soon as I read your post spirit it clicked
I'd placed a info_null outside the map for a spotlight, wanted a nice shadow on me tele.

Mucho gaciass mate

No problem, I am happy to help