do a thorough cleaning by doing the following
uninstall everything cc including preferences, https://helpx.adobe.com/creative-cloud/help/uninstall-remove-app.html
then uninstall the cc desktop app, https://helpx.adobe.com/creative-cloud/help/uninstall-creative-cloud-desktop-app.html
clean your computer of cc files per http://www.adobe.com/support/contact/cscleanertool.html
rename your slstore and adobepcd folders*
restart your computer (don't skip this)
reinstall the cc desktop app, https://creative.adobe.com/products/creative-cloud.
if you're unable to install the cc desktop app at this stage, use an administrator account (solution 3 here, https://helpx.adobe.com/creative-cloud/kb/creative-cloud-missing-damaged.html)
use the desktop app to install your cc programs/trials
Mac: Library/Application Support/Adobe/SLStoreLibrary/Application Support/Adobe/SLCache.
Win 7/ Win 8:
32 bit: ProgramData\Adobe\SLStoreProgram Files\Common Files\Adobe\SLCache\
64 bit: ProgramData\Adobe\SLStoreProgram Files (x86)\Common Files\Adobe\SLCache\
Well I have to say I was not holding out much hope since I had just completed what I thought was a pretty clean install... but your steps did the trick!! Thanks kglad.