I know there is a forum specifically for issues with CC dowload & install, but having signed up a few days early to be ahead of the game, sort of thing, my experiences with CC to date have not ran particularly smoothly. It might well have been my own fault for not going about it in exactly the right way, but so far the Photoshop CS6 update failed with the oft quoted U44M1P7 error message, so I ran the cleaner; deactivated and uninstalled my existing installation of Photoshop CS6, and started again with the Application Manager. This reinstalled Photoshop CS6 for me, but with no icons. That was fixed by changing the file association for a random psd file. I have not bothered with the Update, but I shall probably do so after posting this.
I sure hope the rest of the CC DL & Install is less problematic, but the CC DL & Install forum is seeing some activity.
For anyone who encounters the U44M1P7 error message when updating via the Application Manager, Photoshop CS6 updated fine doing it manually.
Trevor, I've read that the issue of often due to removed files in the normal location, but I've also seen many users in the case having supplemental panels. Are you in either or both cases?