[OnePlus 3 & 3T Cross Device Development] 3liteking148:
Found an issue on 20170226, pressing quick settings options on AICP Extras causes crash.

Log:

--------- beginning of crash
02-26 22:53:24.695 4573 4573 E AndroidRuntime: FATAL EXCEPTION: main
02-26 22:53:24.695 4573 4573 E AndroidRuntime: Process: com.lordclockan, PID: 4573
02-26 22:53:24.695 4573 4573 E AndroidRuntime: java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Integer
02-26 22:53:24.695 4573 4573 E AndroidRuntime:	at android.app.SharedPreferencesImpl.getInt(SharedPreferencesImpl.java:252)
02-26 22:53:24.695 4573 4573 E AndroidRuntime:	at android.preference.Preference.getPersistedInt(Preference.java:1575)
02-26 22:53:24.695 4573 4573 E AndroidRuntime:	at com.lordclockan.aicpextras.widget.SeekBarPreferenceCham.onSetInitialValue(SeekBarPreferenceCham.java:308)
02-26 22:53:24.695 4573 4573 E AndroidRuntime:	at android.preference.Preference.dispatchSetInitialValue(Preference.java:1396)
02-26 22:53:24.695 4573 4573 E AndroidRuntime:	at android.preference.Preference.onAttachedToHierarchy(Preference.java:1182)
02-26 22:53:24.695 4573 4573 E AndroidRuntime:	at android.preference.PreferenceGroup.addPreference(PreferenceGroup.java:163)
02-26 22:53:24.695 4573 4573 E AndroidRuntime:	at android.preference.PreferenceGroup.addItemFromInflater(PreferenceGroup.java:105)
02-26 22:53:24.695 4573 4573 E AndroidRuntime:	at android.preference.PreferenceGroup.addItemFromInflater(PreferenceGroup.java:104)
02-26 22:53:24.695 4573 4573 E AndroidRuntime:	at android.preference.GenericInflater.rInflate(GenericInflater.java:490)
02-26 22:53:24.695 4573 4573 E AndroidRuntime:	at android.preference.GenericInflater.rInflate(GenericInflater.java:495)
02-26 22:53:24.695 4573 4573 E AndroidRuntime:	at android.preference.GenericInflater.inflate(GenericInflater.java:327)
02-26 22:53:24.695 4573 4573 E AndroidRuntime:	at android.preference.GenericInflater.inflate(GenericInflater.java:264)
02-26 22:53:24.695 4573 4573 E AndroidRuntime:	at android.preference.PreferenceManager.inflateFromResource(PreferenceManager.java:280)
02-26 22:53:24.695 4573 4573 E AndroidRuntime:	at android.preference.PreferenceFragment.addPreferencesFromResource(PreferenceFragment.java:326)
02-26 22:53:24.695 4573 4573 E AndroidRuntime:	at com.lordclockan.aicpextras.QuickSettingsFragment$SettingsPreferenceFragment.onCreate(QuickSettingsFragment.java:80)
02-26 22:53:24.695 4573 4573 E AndroidRuntime:	at android.app.Fragment.performCreate(Fragment.java:2336)
02-26 22:53:24.695 4573 4573 E AndroidRuntime:	at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:949)
02-26 22:53:24.695 4573 4573 E AndroidRuntime:	at android.app.BackStackRecord.setLastIn(BackStackRecord.java:860)
02-26 22:53:24.695 4573 4573 E AndroidRuntime:	at android.app.BackStackRecord.calculateFragments(BackStackRecord.java:900)
02-26 22:53:24.695 4573 4573 E AndroidRuntime:	at android.app.BackStackRecord.run(BackStackRecord.java:728)
02-26 22:53:24.695 4573 4573 E AndroidRuntime:	at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1578)
02-26 22:53:24.695 4573 4573 E AndroidRuntime:	at android.app.FragmentManagerImpl$1.run(FragmentManager.java:483)
02-26 22:53:24.695 4573 4573 E AndroidRuntime:	at android.os.Handler.handleCallback(Handler.java:751)
02-26 22:53:24.695 4573 4573 E AndroidRuntime:	at android.os.Handler.dispatchMessage(Handler.java:95)
02-26 22:53:24.695 4573 4573 E AndroidRuntime:	at android.os.Looper.loop(Looper.java:154)
02-26 22:53:24.695 4573 4573 E AndroidRuntime:	at android.app.ActivityThread.main(ActivityThread.java:6176)
02-26 22:53:24.695 4573 4573 E AndroidRuntime:	at java.lang.reflect.Method.invoke(Native Method)
02-26 22:53:24.695 4573 4573 E AndroidRuntime:	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:888)
02-26 22:53:24.695 4573 4573 E AndroidRuntime:	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:778)
02-26 22:53:24.697 1724 3360 I chatty : uid=1000(system) Binder:1724_13 expire 11 lines
02-26 22:53:24.702 1724 5733 I chatty : uid=1000 system_server expire 1 line
02-26 22:53:25.531 1724 2412 I chatty : uid=1000(system) Binder:1724_3 expire 5 lines
02-26 22:53:26.043 1724 3017 I chatty : uid=1000(system) Binder:1724_8 expire 8 lines
02-26 22:53:26.250 1724 3248 I chatty : uid=1000(system) Binder:1724_9 expire 3 lines
02-26 22:53:26.336 1724 1896 I chatty : uid=1000(system) android.display expire 3 lines
02-26 22:53:30.732 5777 5777 E AndroidRuntime: FATAL EXCEPTION: main
02-26 22:53:30.732 5777 5777 E AndroidRuntime: Process: com.lordclockan, PID: 5777
02-26 22:53:30.732 5777 5777 E AndroidRuntime: java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Integer
02-26 22:53:30.732 5777 5777 E AndroidRuntime:	at android.app.SharedPreferencesImpl.getInt(SharedPreferencesImpl.java:252)
02-26 22:53:30.732 5777 5777 E AndroidRuntime:	at android.preference.Preference.getPersistedInt(Preference.java:1575)
02-26 22:53:30.732 5777 5777 E AndroidRuntime:	at com.lordclockan.aicpextras.widget.SeekBarPreferenceCham.onSetInitialValue(SeekBarPreferenceCham.java:308)
02-26 22:53:30.732 5777 5777 E AndroidRuntime:	at android.preference.Preference.dispatchSetInitialValue(Preference.java:1396)
02-26 22:53:30.732 5777 5777 E AndroidRuntime:	at android.preference.Preference.onAttachedToHierarchy(Preference.java:1182)
02-26 22:53:30.732 5777 5777 E AndroidRuntime:	at android.preference.PreferenceGroup.addPreference(PreferenceGroup.java:163)
02-26 22:53:30.732 5777 5777 E AndroidRuntime:	at android.preference.PreferenceGroup.addItemFromInflater(PreferenceGroup.java:105)
02-26 22:53:30.732 5777 5777 E AndroidRuntime:	at android.preference.PreferenceGroup.addItemFromInflater(PreferenceGroup.java:104)
02-26 22:53:30.732 5777 5777 E AndroidRuntime:	at android.preference.GenericInflater.rInflate(GenericInflater.java:490)
02-26 22:53:30.732 5777 5777 E AndroidRuntime:	at android.preference.GenericInflater.rInflate(GenericInflater.java:495)
02-26 22:53:30.732 5777 5777 E AndroidRuntime:	at android.preference.GenericInflater.inflate(GenericInflater.java:327)
02-26 22:53:30.732 5777 5777 E AndroidRuntime:	at android.preference.GenericInflater.inflate(GenericInflater.java:264)
02-26 22:53:30.732 5777 5777 E AndroidRuntime:	at android.preference.PreferenceManager.inflateFromResource(PreferenceManager.java:280)
02-26 22:53:30.732 5777 5777 E AndroidRuntime:	at android.preference.PreferenceFragment.addPreferencesFromResource(PreferenceFragment.java:326)
02-26 22:53:30.732 5777 5777 E AndroidRuntime:	at com.lordclockan.aicpextras.QuickSettingsFragment$SettingsPreferenceFragment.onCreate(QuickSettingsFragment.java:80)
02-26 22:53:30.732 5777 5777 E AndroidRuntime:	at android.app.Fragment.performCreate(Fragment.java:2336)
02-26 22:53:30.732 5777 5777 E AndroidRuntime:	at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:949)
02-26 22:53:30.732 5777 5777 E AndroidRuntime:	at android.app.BackStackRecord.setLastIn(BackStackRecord.java:860)
02-26 22:53:30.732 5777 5777 E AndroidRuntime:	at android.app.BackStackRecord.calculateFragments(BackStackRecord.java:900)
02-26 22:53:30.732 5777 5777 E AndroidRuntime:	at android.app.BackStackRecord.run(BackStackRecord.java:728)
02-26 22:53:30.732 5777 5777 E AndroidRuntime:	at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1578)
02-26 22:53:30.732 5777 5777 E AndroidRuntime:	at android.app.FragmentManagerImpl$1.run(FragmentManager.java:483)
02-26 22:53:30.732 5777 5777 E AndroidRuntime:	at android.os.Handler.handleCallback(Handler.java:751)
02-26 22:53:30.732 5777 5777 E AndroidRuntime:	at android.os.Handler.dispatchMessage(Handler.java:95)
02-26 22:53:30.732 5777 5777 E AndroidRuntime:	at android.os.Looper.loop(Looper.java:154)
02-26 22:53:30.732 5777 5777 E AndroidRuntime:	at android.app.ActivityThread.main(ActivityThread.java:6176)
02-26 22:53:30.732 5777 5777 E AndroidRuntime:	at java.lang.reflect.Method.invoke(Native Method)
02-26 22:53:30.732 5777 5777 E AndroidRuntime:	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:888)
02-26 22:53:30.732 5777 5777 E AndroidRuntime:	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:778)

EDIT: Cleared the data of the AICP Extras app and now its working :)