I have, if Google is anything to go by, a unique problem.
I had the student version of Maya 2012. I had been having some problems, so I went to download service pack 1. SP1 is a full install, so I uninstalled Maya and went to install SP1.
Strangely, the installer said that Maya was already installed, and there is no option to override or repair the previous installation. I double checked add/remove programs, and it wasn't there. I followed the instructions outlined here to the letter, and tried to install it again, and still the Maya 2012sp1 installer says that Maya is already installed. I cant run the uninstaller because it isn't there, and I can't install it because it thinks that it is.
My only guess is that there is some registry file or something that somehow escaped the uninstallation process, but I can't for the life of me find it. The uninstallation must have been interrupted or something, but I don't see why the above instructions wouldn't have fixed it. Does anyone have any idea what I can do? Is there an uninstall utility somewhere that escaped my searching for it that I can download? Any help would be greatly appreciated.