The 15.10 release is not compatible with any previous release. The 15.10 installer will provide the option to remove any pre-15.10 release found before installing 15.10 or cancel the install.
- Click Install.
- Click Continue to uninstall the previous version and continue with the 15.10 install or Cancel to exit the installation.Information about the packages removed can be found in the log file: /tmp/TTUInstall15.10.log.