All installations fail with Exit Code: 7 error

Hi, can you help please? 

I am trying to download and install the CC 2014 through the Creative Cloud app but they keep failing with the Exit Code: 7 error mentioned above.  The installation gets to 42% and then I get the error.  Rebooted several times and re-tried.  It happened first after trying to update Bridge CC, asked me to quit programs and Retry and now have this issue and cannot move forward.  Used the Adobe Cleaner to remove CC Desktop app and re-installed OK, but problem persists.

I can carry on working in my current apps but really would like to start with the CC 2014 a soon as possible

Thanks

Simon