Players get booted to menu when they try to load my map

[Rebel Blue]

Ive recently uploaded my map to the steam store but whenever players try to play on the map they just get kicked to menu screen with this error:

CModelLoader::Map_IsValid: 'maps/rp_yavin_iv_extensive.bsp' is not a valid BSP file
map load failed: rp_yavin_iv_extensive not found or invalid

Please help me

[Firegod522]

This is the same map from the other thread you made correct?

[Lt. Parkinson's]

This is a common problem.
"not found or invalid" simply means that either Hammer could not find the map, or the map is invalid in some way or another, I'm going to go with Hammer can't find it first then the invalid one next:
By default, Hammer always searches for your VMFs in your maps folder, here's its directory:
C:\Program Files (x86)\Steam\steamapps\common\GarrysMod\garrysmod\maps
Make sure that all of your maps are in there, any maps out of it cannot be found by Hammer, that is all I can think of for now on that section, now lets see why Hammer may not be able to find it.

An invalid map may be because of a part of the map, I think a leak can cause this but I can't exactly remember, the map may contain a prop going through the skybox, the skybox may leak out to the void, there are many things that can cause a leak, so look through your map. Try looking through the compile log of the map and see if you can find the source of the error. One last thing, if you can, be more specific, that way we can try a better approach to the situation.