Sending move packet with join corrupts userdb file

[Proliecan]

No description provided.

[Proliecan]

This

void Bot::join()
    {
        // send join packet
        do_write("join|" + username + "|" + password + "\n");
        // send first move packet
        do_write("move|" + firstMove + "\n");
        // start game loop
        gameLoop();
    }

without specifying a firstMove

makes the user file come out as

name$passwd_hash
move

Why?
No clue.