I've deleted everything and done from scratch.
I've executed forge/install.cmd
it downloaded mcp, jars, various natives... then i went into forge/mcp/src
and still there's no server src. Decompiling still give me the same exact error.
Anyone that can explain me this: http://pastebin.com/PkxXQdGr ?
I've used the latest MCP, with latest forge source and latest minecraft.jar / minecraft_server.jar
I didn't made any kind of changes in the source. Just unpacked mcp, forge, installed forge and then trying to decompile the server as there was not its src