downloading ADobe Creative Cloud

I'm downloading ADobe Creative Cloud and after ten hours its only a third of the way on the progress bar in running package scripts - I foolishly didn't check all system requirements first - so perhaps it can't install - I can't quit installation but this is obviously not working - when I tried to force quit a message said - interrupting the install may damage the machine -   I would like to shut down - but what will this do to my machine - is it a high risk.  Thanks for any advice