Sorry to bring up and old topic but I have found a fix that might work for people that can't get airstream to work.
In the folder PC Airstream server installs to there is an update tool, run that. It may take a minute or two but it will install Airstream server version 4 (at least it did for me) I know this is an older version but it works where version 5.1.2 doesn't.
Hope this helps people who are having probs.
Last edited by S1eB; 1st November 2014 at 06:26 PM.