LIghtroom 6 upgrade (from LR5) freezes on my Win7 64bit. After unpacking and launching Set-up.exe, a progress bar appears and after it runs till its end, bar disappears and nothing else happens except of PDapp.exe still using one full core of my CPU. Tried to wait for 7 hours, nothing happened.
Advice from Adobe local support helped:
1. Backup your LR catalogue.
2. Delete everything from Adobe incl. Flash and previous Lightroom version.
3. Run Adobe CC Cleaner http://helpx.adobe.com/cz/creative-su...
4. Install LR6 and other Adobe software.