installed the trial version and have not been able to get things working once.  I get the error message that is displayed above. I have tried all your suggestions and am still not able to run it. I downloaded the version you posted above as well. I am on MAC OS 10.8.1 on a MacBook Pro running a 2.4 ghz i5.  It was purchased this year. All the links work.  I am not running Anti-virus or any firewall programs. PLEASE help with this.  This problem and the fact that I have sent adobe (unanswered) emails is what is stopping me from subscribing to the creative cloud.  I would really like to get this fixed so I can try it out.  Please let me know if you have any suggestions. arrakis13, are you seeing the same error message as above on a screen with a white background (appearing after the green splash screen, but before anything else appears)? If so, could you send me the MuseLog.txt file from your Documents folder? Please send it to muse-support@adobe.com with a link to this thread. Thanks. Received. It appears you're encountering the same problem as skreanaem. If you go to About This Mac in the Finder, then click More Info... and then click System Report... what "Model Identifier:" is your MacBook Pro? (The identifier should be something like "MacBookPro10,1".) Are you using wireless to connect to the internet? If so, if you have a wired connection available to try (and turn off Airport) does