I am unable to Preview my mission. I've tried to view Preview my mission on three different computer running three different operatin systems and multiple web browsers.
System 1:
OS: Mac OS X 10.8.5
Ram: 16 GB
Browsers: Safari, Firefox, and Chrome
System 2:
OS: Windows 7 SP1
RAM: 8 GB
Browser: Chrome
System 3
OS: Mac OS X
RAM: 8 GB
Browser: Safari
After I click on Preview, I see a "Preparing preview ..." pop-up. The pop-up then disappears and the only thing visible other than navigation bar at the top of the screen is the X-Wing and TIE fighter background.