To completely uninstall ReadCube from your computer:Windows XP and up:
1.) Navigate to C:/Users/[account name]/appdata/local by opening the Run dialog and pasting in %localappdata% (select Run from the Start Menu or press the Windows key + R)
2.) Open the "com.readcube.desktop" folder.
Mac OS X:
1.) Go to ~/Library/Preferences by opening a Finder window and hitting Cmd+Shift+G. Paste in ~/Library/Preferences
2) Open the "com.readcube.desktop" folder. If you can't find this folder here, check under ~/Library/Application Support.
3.) There is an Uninstall utility in this folder - double-click to run it and uninstall the app.
4.) Your library database - in the "data" folder - will not be deleted. To back up the database, move the entire "data" folder to another location on your computer (e.g. the desktop).
5.) Delete the com.readcube.desktop folder
You can also download the uninstall utility here:
Note: Please try both the "regular" uninstall, and then the Cleanup Utility, before contacting Support as oftentimes your uninstall problem can be solved by following the above instructions.