데이터베이스(DBAdapter)를 추가하고 나니 실행이 안됩니다. 무슨 이유로 안되는지는 모르겠습니다. onCreate 코드가 실행되기도 전에 어플이 죽어버립니다.
The application Calendar (process calendar.calendar) has stopped uexpectedly. Please try again. 라고 뜨면서 죽습니다.

다음은 로그입니다.

11-10 05:27:06.760: DEBUG/AndroidRuntime(322): >>>>>>>>>>>>>> AndroidRuntime START <<<<<<<<<<<<<<

11-10 05:27:06.770: DEBUG/AndroidRuntime(322): CheckJNI is ON

11-10 05:27:07.390: DEBUG/AndroidRuntime(322): --- registering native functions ---

11-10 05:27:08.461: DEBUG/ddm-heap(322): Got feature list request

11-10 05:27:09.931: DEBUG/AndroidRuntime(322): Shutting down VM

11-10 05:27:09.961: DEBUG/dalvikvm(322): DestroyJavaVM waiting for non-daemon threads to exit

11-10 05:27:09.961: DEBUG/dalvikvm(322): DestroyJavaVM shutting VM down

11-10 05:27:09.961: DEBUG/dalvikvm(322): HeapWorker thread shutting down

11-10 05:27:09.971: ERROR/AndroidRuntime(322): ERROR: thread attach failed

11-10 05:27:09.971: DEBUG/dalvikvm(322): HeapWorker thread has shut down

11-10 05:27:09.981: DEBUG/jdwp(322): JDWP shutting down net...

11-10 05:27:09.981: INFO/dalvikvm(322): Debugger has detached; object registry had 1 entries

11-10 05:27:09.991: DEBUG/dalvikvm(322): VM cleaning up

11-10 05:27:10.141: DEBUG/dalvikvm(322): LinearAlloc 0x0 used 629532 of 5242880 (12%)

11-10 05:27:11.221: DEBUG/AndroidRuntime(331): >>>>>>>>>>>>>> AndroidRuntime START <<<<<<<<<<<<<<

11-10 05:27:11.261: DEBUG/AndroidRuntime(331): CheckJNI is ON

11-10 05:27:11.901: DEBUG/AndroidRuntime(331): --- registering native functions ---

11-10 05:27:12.971: DEBUG/ddm-heap(331): Got feature list request

11-10 05:27:14.291: INFO/ActivityManager(62): Starting activity: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=calendar.calendar/.calendar }

11-10 05:27:14.501: DEBUG/AndroidRuntime(331): Shutting down VM

11-10 05:27:14.501: DEBUG/dalvikvm(331): DestroyJavaVM waiting for non-daemon threads to exit

11-10 05:27:14.521: DEBUG/dalvikvm(331): DestroyJavaVM shutting VM down

11-10 05:27:14.521: DEBUG/dalvikvm(331): HeapWorker thread shutting down

11-10 05:27:14.531: DEBUG/dalvikvm(331): HeapWorker thread has shut down

11-10 05:27:14.531: DEBUG/jdwp(331): JDWP shutting down net...

11-10 05:27:14.531: INFO/dalvikvm(331): Debugger has detached; object registry had 1 entries

11-10 05:27:14.541: DEBUG/dalvikvm(331): VM cleaning up

11-10 05:27:14.691: ERROR/AndroidRuntime(331): ERROR: thread attach failed

11-10 05:27:14.901: DEBUG/dalvikvm(331): LinearAlloc 0x0 used 639500 of 5242880 (12%)

11-10 05:27:15.021: INFO/ActivityManager(62): Start proc calendar.calendar for activity calendar.calendar/.calendar: pid=338 uid=10027 gids={1015}

11-10 05:27:15.571: DEBUG/ddm-heap(338): Got feature list request

11-10 05:27:16.764: DEBUG/AndroidRuntime(338): Shutting down VM

11-10 05:27:16.771: WARN/dalvikvm(338): threadid=3: thread exiting with uncaught exception (group=0x4001b188)

11-10 05:27:16.872: ERROR/AndroidRuntime(338): Uncaught handler: thread main exiting due to uncaught exception

11-10 05:27:17.071: ERROR/AndroidRuntime(338): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{calendar.calendar/calendar.calendar.calendar}: java.lang.NullPointerException

11-10 05:27:17.071: ERROR/AndroidRuntime(338):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2417)

11-10 05:27:17.071: ERROR/AndroidRuntime(338):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2512)

11-10 05:27:17.071: ERROR/AndroidRuntime(338):     at android.app.ActivityThread.access$2200(ActivityThread.java:119)

11-10 05:27:17.071: ERROR/AndroidRuntime(338):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1863)

11-10 05:27:17.071: ERROR/AndroidRuntime(338):     at android.os.Handler.dispatchMessage(Handler.java:99)

11-10 05:27:17.071: ERROR/AndroidRuntime(338):     at android.os.Looper.loop(Looper.java:123)

11-10 05:27:17.071: ERROR/AndroidRuntime(338):     at android.app.ActivityThread.main(ActivityThread.java:4363)

11-10 05:27:17.071: ERROR/AndroidRuntime(338):     at java.lang.reflect.Method.invokeNative(Native Method)

11-10 05:27:17.071: ERROR/AndroidRuntime(338):     at java.lang.reflect.Method.invoke(Method.java:521)

11-10 05:27:17.071: ERROR/AndroidRuntime(338):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)

11-10 05:27:17.071: ERROR/AndroidRuntime(338):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)

11-10 05:27:17.071: ERROR/AndroidRuntime(338):     at dalvik.system.NativeStart.main(Native Method)

11-10 05:27:17.071: ERROR/AndroidRuntime(338): Caused by: java.lang.NullPointerException

11-10 05:27:17.071: ERROR/AndroidRuntime(338):     at android.content.ContextWrapper.getApplicationContext(ContextWrapper.java:100)

11-10 05:27:17.071: ERROR/AndroidRuntime(338):     at calendar.calendar.calendar.<init>(calendar.java:40)

11-10 05:27:17.071: ERROR/AndroidRuntime(338):     at java.lang.Class.newInstanceImpl(Native Method)

11-10 05:27:17.071: ERROR/AndroidRuntime(338):     at java.lang.Class.newInstance(Class.java:1479)

11-10 05:27:17.071: ERROR/AndroidRuntime(338):     at android.app.Instrumentation.newActivity(Instrumentation.java:1021)

11-10 05:27:17.071: ERROR/AndroidRuntime(338):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2409)

11-10 05:27:17.071: ERROR/AndroidRuntime(338):     ... 11 more

11-10 05:27:17.301: INFO/Process(62): Sending signal. PID: 338 SIG: 3

11-10 05:27:17.493: INFO/dalvikvm(338): threadid=7: reacting to signal 3

11-10 05:27:17.821: INFO/dalvikvm(338): Wrote stack trace to '/data/anr/traces.txt'

11-10 05:27:24.465: WARN/ActivityManager(62): Launch timeout has expired, giving up wake lock!

11-10 05:27:25.953: WARN/ActivityManager(62): Activity idle timeout for HistoryRecord{43d11da8 calendar.calendar/.calendar}

11-10 05:27:26.741: DEBUG/dalvikvm(62): threadid=15: bogus mon 1+0>0; adjusting

어디가 문제인걸까요? 답변해주시면 감사하겠습니다.