Problem seems to be that the RC3 AMI (ami-c1ad79aa) is not pulbic 2015-07-15 13:38 GMT-05:00 Alexander Vowinkel <vowinkel.alexander@gmail.com> :

Hi guys,

cloudlounch at launch.usegalaxy.org doesn't work for me anymore. Some hours ago I still was able to start a cluster, but now it seems that the launcher can't connect to my amazon anymore? No machnie get's started. But I'm still able to fetch key pair and placement.

Any suggestions what to try?

Already: Reloaded page, Restarted PC.

Thanks, Alexander