packages/apps/CMParts/src/com/cyanogenmod/cmparts/activities/DisplayActivity.java:172: cannot find symbol
symbol  : variable prefSet
location: class com.cyanogenmod.cmparts.activities.DisplayActivity
                ((PreferenceCategory) prefSet.findPreference(GENERAL_CATEGORY))
                                      ^
packages/apps/CMParts/src/com/cyanogenmod/cmparts/activities/DisplayActivity.java:173: removePreference(android.preference.Preference) in android.preference.PreferenceGroup cannot be applied to (boolean)
                    .removePreference(hasLightAlwaysOn);
                    ^