Sorry for the late response. This occurs either way I open the Adobe Muse application. Double click on the desktop shortcut and double click on a saved site.
I am getting by using the air version of Muse CC. I have tested Adobe Muse CC 2014 on a windows 7 OS and works fine, I was teased with the reliability and new features... I'd really like to start using Muse CC 2014 on Windows 8 64bit.