In section "Initialising the library"
the code line "uint8_type vers = ether.begin(sizeof Ethernet::buffer, mymac);" -> correction from uint8_type to uint8_t
In section "Static IP Address"
the code line "if(!ether.staticSetup(ip, gw, dns);" -> remove semicolon and add ')' to the end -> "if(!ether.staticSetup(ip, gw, dns))"
To whom it may concern...