Using registry/disk cleaners (CCleaner, SpeedUpMyPC,etc) in the Windows 8 Developer/Consumer Preview will result in the absence of both the app store and the metro/immersive Control Panel being unavailable in your installation. Luckily, I have found a fix for this problem. But first, a summary...
ccleaner
consumer preview
control panel
developer preview
disk cleaners
fix
immersive
invalidshortcuts
metro apps
registry cleaner
remote desktop
sfc command
software repair
system repair
troubleshooting
windows 8
windows store