Please give this a try:
Launch the Activity Monitor from Applications > Utilities.
Force quit the installer from the Activity Monitor and then check if you can find Creative Cloud on the machine.
If you don't find the Adobe Creative Cloud Desktop App, then try this:
1) Rename the OOBE folder to OOBE_old
The folder can be found here: Mac OS: /Users/[user name]/Library/Application Support/Adobe
2) open the Finder and go to /Applications/Utilities/
rename the Adobe Application Manager & Adobe Creative Cloud folders (add _old to the name as you did with OOBE)
3) Install the Adobe Creative Cloud Desktop app- https://helpx.adobe.com/creative-cloud/help/install-apps.html
Or Direct link: http://prodesigntools.com/adobe-cc-2015-direct-download-links.html