I've looked into this for a while and it has got me stumped...I was experimenting with trains and my problem is thus far:
When I compile my map with a func_tracktrain that follows path_tracks it appears fine. But when I test the map I get this problem:
http://img259.imageshack.us/img259/9409/trainpleasework0000om3.jpg
On the right is the train assigned to func_tracktrain and as you can see is pitch black. The two on the left are func_detail with lights inside.
I've tried the following:
Since light, light_spot etc don't have a parent option I tried parenting the train to the lights...This just makes the train dissapear in-game.
So I tried light_dynamic but that doesn't seem to light it at all...Nothing...
So I tried just grouping them in Hammer and obviously that wouldn't work.
If I shine my flashlight on it then it lights up in that area where I have shone my light on. I've builtcubemaps etc and reset the map for affect. I have no more ideas and searched for a similar problem...No-one on my MSN lists knows what to do so can somebody please help...