packages/apps/CarbonFibers/src/org/carbonrom/carbonfibers/fragments/buttons/Buttons.java:71: error: cannot find symbol
                keysCategory.removePreference(toRemove);
                ^
  symbol:   variable keysCategory
  location: class Buttons
packages/apps/CarbonFibers/src/org/carbonrom/carbonfibers/fragments/buttons/Buttons.java:78: error: cannot find symbol
                keysCategory.removePreference(toRemove);
                ^
  symbol:   variable keysCategory
  location: class Buttons
2 errors