Map Appears Purple....

The purple most likely means it doesn't have reflections to work with. Have you placed cubemaps to tell the engine where to reflect from? If not, place an entity called env_cubemap 72 or so units above the floor in each area that is a major change to how the map looks.
Then go ingame, open your map, and input these commands:
sv_cheats 1 --- allows cheats
mat_specular 0 --- disables reflection
buildcubemaps --- builds reflections. Images should flash across the screen at this point.
mat_specular 1 --- enables reflection
mat_reloadallmaterials --- reloads the materials in the map

Not sure about the order of the last two but I think it might not matter. If it still shows purple after this, switch to a different map and then switch to your map again.

hum EVERYTHING purple? for everyone except you?
you did not include the custom materials in your map with pakrat.
you see you have the swamp texture/models in your tf folder but others don't. that's why you're the only one who can see it properly.
instead of asking people to install the swamp theme on their tf, we use pakrat to include every custom material inside the .bsp

http://developer.valvesoftware.com/wiki/Pakrat