I am upgrading from 4.5 to 5.1 on windows using the installer.
I followed the upgrade instructions at http://www.jetbrains.net/confluence/display/TCD5/Upgrade. I backed up the team city and configuration folders, stopped the team city web server and buid agent services. Then I uninstalled the current installation with add/remove, then ran the new installer and it ran, but failed to install the tomcat server. I can't reinstall because it tells me there is already an installation and it fails to remove it during setup. What do I need to do?