attdef.pwn doesn't compile

[TheChaozK]

Hello, there's a problem with the attdef.pwn file. I downloaded the source code of the last version of this gamemode but when I compile the attdef.pwn it doesn't compile, it keeps with that white box but doesn't compile anything, once I run samp-server.exe this errors appears:

Script[gamemodes/attdef.amx]: Run time error 17: "Invalid/unsupported P-code file format"
Failed to load 'gamemodes/attdef.amx' script.

So, how to fix this up?