foursquare crash stacktrace

Foursquare stackTrace

E/AndroidRuntime( 2118): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.joelapenna.foursquared/com.joelapenna.foursquared.app.FragmentShellActivity}: android.support.v4.app.Fragment$InstantiationException: Unable to instantiate fragment com.joelapenna.foursquared.fragments.photos.o: make sure class name exists, is public, and has an empty constructor that is public
E/AndroidRuntime( 2118):        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2306)
E/AndroidRuntime( 2118):        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2358)
E/AndroidRuntime( 2118):        at android.app.ActivityThread.access$600(ActivityThread.java:156)
E/AndroidRuntime( 2118):        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1340)
E/AndroidRuntime( 2118):        at android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime( 2118):        at android.os.Looper.loop(Looper.java:153)
E/AndroidRuntime( 2118):        at android.app.ActivityThread.main(ActivityThread.java:5297)
E/AndroidRuntime( 2118):        at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime( 2118):        at java.lang.reflect.Method.invoke(Method.java:511)
E/AndroidRuntime( 2118):        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833)
E/AndroidRuntime( 2118):        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
E/AndroidRuntime( 2118):        at dalvik.system.NativeStart.main(Native Method)
E/AndroidRuntime( 2118): Caused by: android.support.v4.app.Fragment$InstantiationException: Unable to instantiate fragment com.joelapenna.foursquared.fragments.photos.o: make sure class name exists, is public, and has an empty constructor that is public
E/AndroidRuntime( 2118):        at android.support.v4.app.Fragment.instantiate(SourceFile:413)
E/AndroidRuntime( 2118):        at android.support.v4.app.FragmentState.instantiate(SourceFile:97)
E/AndroidRuntime( 2118):        at android.support.v4.app.FragmentManagerImpl.restoreAllState(SourceFile:1790)
E/AndroidRuntime( 2118):        at android.support.v4.app.FragmentActivity.onCreate(SourceFile:213)
E/AndroidRuntime( 2118):        at com.foursquare.core.d.onCreate(SourceFile:43)
E/AndroidRuntime( 2118):        at com.foursquare.core.k.onCreate(SourceFile:24)
E/AndroidRuntime( 2118):        at com.joelapenna.foursquared.app.FragmentShellActivity.onCreate(SourceFile:114)
E/AndroidRuntime( 2118):        at android.app.Activity.performCreate(Activity.java:5122)
E/AndroidRuntime( 2118):        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1081)
E/AndroidRuntime( 2118):        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2270)
E/AndroidRuntime( 2118):        ... 11 more
E/AndroidRuntime( 2118): Caused by: java.lang.InstantiationException: can't instantiate class com.joelapenna.foursquared.fragments.photos.o; no empty constructor
E/AndroidRuntime( 2118):        at java.lang.Class.newInstanceImpl(Native Method)
E/AndroidRuntime( 2118):        at java.lang.Class.newInstance(Class.java:1319)
E/AndroidRuntime( 2118):        at android.support.v4.app.Fragment.instantiate(SourceFile:402)
E/AndroidRuntime( 2118):        ... 20 more