Long list of errors on starting the app

I got to just about the end of the video, setup the crystal ball app and stuff, but upon attempting to run it it screamed and died. (no, there wasn't an audio thing, it's just an odd phrase meaning it crashed while sending errors to the log.) Eclipse and the Emulator work fine, but the crystal ball app seems to have some issues. I have some logs from LogCat, but naturally, I, being almost entirely new to this form of programming, can't read it well enough to tell what the problem is.

I checked the markdown cheat sheet for some easy way to condense this log file's text, but I didn't see any.

06-27 14:03:37.600: D/dalvikvm(975): Not late-enabling CheckJNI (already on) 06-27 14:03:39.480: W/dalvikvm(975): VFY: unable to resolve static field 1559 (ActionBarWindow) in Landroid/support/v7/appcompat/R$styleable; 06-27 14:03:39.480: D/dalvikvm(975): VFY: replacing opcode 0x62 at 0x0004 06-27 14:03:39.490: D/AndroidRuntime(975): Shutting down VM 06-27 14:03:39.490: W/dalvikvm(975): threadid=1: thread exiting with uncaught exception (group=0xb2af3ba8) 06-27 14:03:39.500: E/AndroidRuntime(975): FATAL EXCEPTION: main 06-27 14:03:39.500: E/AndroidRuntime(975): Process: com.example.crystalball, PID: 975 06-27 14:03:39.500: E/AndroidRuntime(975): java.lang.NoClassDefFoundError: android.support.v7.appcompat.R$styleable 06-27 14:03:39.500: E/AndroidRuntime(975): at android.support.v7.app.ActionBarActivityDelegate.onCreate(ActionBarActivityDelegate.java:107) 06-27 14:03:39.500: E/AndroidRuntime(975): at android.support.v7.app.ActionBarActivityDelegateICS.onCreate(ActionBarActivityDelegateICS.java:58) 06-27 14:03:39.500: E/AndroidRuntime(975): at android.support.v7.app.ActionBarActivity.onCreate(ActionBarActivity.java:98) 06-27 14:03:39.500: E/AndroidRuntime(975): at com.example.crystalball.MainActivity.onCreate(MainActivity.java:18) 06-27 14:03:39.500: E/AndroidRuntime(975): at android.app.Activity.performCreate(Activity.java:5231) 06-27 14:03:39.500: E/AndroidRuntime(975): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087) 06-27 14:03:39.500: E/AndroidRuntime(975): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159) 06-27 14:03:39.500: E/AndroidRuntime(975): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245) 06-27 14:03:39.500: E/AndroidRuntime(975): at android.app.ActivityThread.access$800(ActivityThread.java:135) 06-27 14:03:39.500: E/AndroidRuntime(975): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196) 06-27 14:03:39.500: E/AndroidRuntime(975): at android.os.Handler.dispatchMessage(Handler.java:102) 06-27 14:03:39.500: E/AndroidRuntime(975): at android.os.Looper.loop(Looper.java:136) 06-27 14:03:39.500: E/AndroidRuntime(975): at android.app.ActivityThread.main(ActivityThread.java:5017) 06-27 14:03:39.500: E/AndroidRuntime(975): at java.lang.reflect.Method.invokeNative(Native Method) 06-27 14:03:39.500: E/AndroidRuntime(975): at java.lang.reflect.Method.invoke(Method.java:515) 06-27 14:03:39.500: E/AndroidRuntime(975): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) 06-27 14:03:39.500: E/AndroidRuntime(975): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) 06-27 14:03:39.500: E/AndroidRuntime(975): at dalvik.system.NativeStart.main(Native Method)