As they have said, you need to compile the server, since its not compiled for ubuntu.. Or use it on your windows server?!
Snake has a service that for 5 eur he compiles and sets your server up. Id rather use his service then do it myself, tried like 3 times, failed all 3. Even if I follow the tutorials to 100%.
Ask Eg. Snake or Cykotitan etc someone who has a big knowledge in linux, 5eur for a 10min job is a decent sallory!
WibbenZ