This one had me puzzled. After various issues I got fed up and decided to do a full uninstall and reinstall of my ConfigMgr site. The whole thing. Blow away the database, clean out all the directories and start the install from scratch.
All was well right up to the point I tried to install CU2. It kept telling me it was already installed and I could only recreate the update packages.
“This update is already installed on the computer. Only options to create deployments for this update are available.”
OK I thought, it must have detected the old windows installer cache files or something and auto updated to CU2 during install. However, creating the update packages then failed saying the source wasn’t available.
A quick version check and the CM2012 files are still SP1 version. A check of installed updates shows the CU2 update already installed, but no repair or uninstall option is available. At this point I was getting ready to start hacking entries out of the registry.
But first… TO THE INTERNET!