Same thing happening here. Premiere CC built using Creative Cloud Packager. Get's stuck at about 15% and then just crashes explorer. UAC is off. Set up ran as Administrator.
Installing now and currently stuck again. This is from current log:
MSI (s) (1C:A4) [16:22:09:120]: Executing op: CustomActionSchedule(Action=CADeploy,ActionType=1025,Source=BinaryData,Target=runDeployme ntManagerCA,CustomActionData=mode=install;sourceDir=B:\Application\Adobe Premiere CC\Build\;installDir=;origDB=B:\Application\Adobe Premiere CC\Build\Adobe Premiere CC.msi)
Log hasn't updated for 5 minutes. Installer progress bar is stuck on 15%.