ok almost there but its being stubborn, :)
i went in and created the gsc and fx.gsc files, i did not remove the other two files that had been created there (wasnt sure if i should), then i went to update zone file and added these
rawfile,maps/mp/mp_mapname.gsc
rawfile,maps/mp/mp_mapname_fx.gsc
then i built the fast file again
then i compiled the bsp without problems, but when i went to compile reflections, i get an error message that says
"script compile error, Could not find script 'maps/createart/mp_warehouse_art' maps\createart\mp_warehouse_art::main[]; [see console for details]"
also i noticed, when i update those 2 files and rebuild the fastfile, they do not go away from the "missing assets" column,

one other things, not sure if its relavant, there are two other things that it says my zone file is missing
rawfile,vision/mp_warehouse.vision
rawfile,maps/createfx/mp_warehouse_fx.gsc
i've tried adding them but they do not go away either

1. Well the missing art file should not cause any problems... Anyway I got the one of overgrown here for you.

// _createart generated. modify at your own risk. Changing values should be fine.
main()
{
   level.tweakfile = true;

    //* Fog section *
    setdvar( "scr_fog_disable", "0" );
    setExpFog(612, 4500, 0.613, 0.621, 0.609, 0);

    VisionSetNaked( "mp_overgrown", 0 );
}

2. The missing assets will never get deleted so get used to it. (Ofcourse you could do it mannually.)

(The following are necessary!)
3. The vision file is for the look (and feel) of the map.
4. The fx is for effects you want to be in your map!