Remove CrossOver as installed from the Ubuntu Software Center
CrossOver 12.5.1 is the first version of CrossOver that is multi-arch compatible. This means some headache when upgrading.
If you installed from the Ubuntu Software Center, please open a terminal (ctrl+alt+T) and give the following command as user: /opt/cxoffice/bin/cxuninstall
Then, the same command as root: sudo /opt/cxoffice/bin/cxuninstall
Now, restart the installation.
Remove the Ubuntu Software Center's Crossover 11.0.2 trial
Generally speaking, you'll want to remove Crossover from your Linux computer according to these instructions.
However, if you installed Crossover (Trial) by searching for "Crossover" in the Ubuntu software center and then installing the version of our software that's available directly through the Ubuntu Software center (as opposed to downloading a copy from Codeweavers.com), you will have to remove that version of Crossover through the Software Center. Using Crossover's built-in uninstaller will not work.
Note that you will need to uninstall the Crossover 11.0.2 version installed via the Ubuntu Software Center if you want to upgrade to a newer version via a download from our website.