In addition to the section quoted by mcc84, also note this (also from the uninstallation section):
* First, make 100% sure that the version of "Menus\Main\quickkeys_menu.xml" that Enhanced Hotkeys installs, gets uninstalled. If using OBMM to install/uninstall, OBMM will not remove this file if you already had the file installed with another mod (like DarkUI), so you must then delete this file manually. If you delete the unique xml files Enhanced Hotkeys installs, but not this, you will get a CTD when trying to load any savegame.
...but this is really only normal uninstallation procedure, that you must make sure that all the installed files get removed. Only the hotkey part that mcc84 quotes is special...