why are the new things i add to my map do not appear when i run the map?

[syf2010]

does anyone know how to fix it?

[Sarah]

are you sure you're recompiling the map when you add the new things? and if you are recompiling the map, try deleting the old .bsp and recompiling the vmf

[Shift]

Read your compile log. 90% chance there's a leak, and log will tell you.