Server not downloading custom files?

Hi,

I am a developer for a TTT server. The only problem is, I recently installed a custom weapon for the server - its not from CS:S. When equipping the weapon, the viewmodel/worldmodel and sound doesn’t function for the weapon, this is a sign of the server not uploading files to the client.

How can I make a player get the files? (Download it from the server automatically)

resource.AddFile