L4D mapping

I know not about DM, but source mapping can I have some tips please? I heard Valar is the one to ask about L4D mapping

I have a problem with my map - I can compile the map and add it as an 'add-on' to L4D, in order to play it in any game mode (e.g. survival) but somehow only the special zombies can spawn (e.g. boomer, hunter), no regular zombies are spawned.

I don't know why this is, what am I doing wrong?

Any help would be appreciated.

Sadist.

P.S. I have already created a nav file and got the bots moving on their own but still no regular zombies.

PM me / add me on Steam. i hardly go online busy with mapping but happy to help.

Think I worked it out now - seems the nav file needs to include waypoints far enough away from the start room to get hordes (it doesn't say anything about this in the manual )

Thanks for the time being.