C2DM 예제를 돌려보는 중 아래와 같은 에러가 발생 합니다..ㅜ.ㅜ;

02-07 14:59:05.378: INFO/System.out(19803): registration_id====>APA91bHmKZn85LQewp2zH6ROWQ2TMTHD7E6Dc3tp-LgSgg2-IKPbvS5Ikbx3Qc2VyTT-_fU2ph6L4r-MlZSPUsGp4anX0G_75cnnBnMWegSxBFqeYBI7QAY
02-07 14:59:05.378: INFO/System.out(19803): registration_id complete!!
02-07 14:59:10.668: DEBUG/dalvikvm(18705): GC_EXPLICIT freed 46 objects / 2200 bytes in 280ms
02-07 14:59:12.298: INFO/global(19803): Default buffer size used in BufferedReader constructor. It would be better to be explicit if an 8k-char buffer is required.
02-07 14:59:12.938: DEBUG/dalvikvm(19803): GC_FOR_MALLOC freed 5619 objects / 328968 bytes in 32ms
02-07 14:59:13.528: DEBUG/dalvikvm(5904): JIT code cache reset in 8 ms (1048576 bytes 1/0)
02-07 14:59:13.528: DEBUG/NativeCrypto(5904): Freeing OpenSSL session
02-07 14:59:13.528: DEBUG/dalvikvm(5904): GC_FOR_MALLOC freed 8818 objects / 520640 bytes in 49ms
02-07 14:59:13.528: DEBUG/NativeCrypto(5904): Freeing OpenSSL session


//여기서 부터 에러 메세지 입니다.
02-07 14:59:13.768: ERROR/TalkProvider(5904): query db caught
02-07 14:59:13.768: ERROR/TalkProvider(5904): java.lang.IllegalArgumentException: the bind value at index 2 is null
02-07 14:59:13.768: ERROR/TalkProvider(5904):     at android.database.sqlite.SQLiteProgram.bindString(SQLiteProgram.java:234)
02-07 14:59:13.768: ERROR/TalkProvider(5904):     at android.database.sqlite.SQLiteQuery.bindString(SQLiteQuery.java:182)
02-07 14:59:13.768: ERROR/TalkProvider(5904):     at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:48)
02-07 14:59:13.768: ERROR/TalkProvider(5904):     at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1345)
02-07 14:59:13.768: ERROR/TalkProvider(5904):     at android.database.sqlite.SQLiteQueryBuilder.query(SQLiteQueryBuilder.java:330)
02-07 14:59:13.768: ERROR/TalkProvider(5904):     at com.google.android.gsf.talk.TalkProvider.queryInternal(TalkProvider.java:1740)
02-07 14:59:13.768: ERROR/TalkProvider(5904):     at com.google.android.gsf.talk.TalkProvider.query(TalkProvider.java:1436)
02-07 14:59:13.768: ERROR/TalkProvider(5904):     at android.content.ContentProvider$Transport.query(ContentProvider.java:163)
02-07 14:59:13.768: ERROR/TalkProvider(5904):     at android.content.ContentResolver.query(ContentResolver.java:245)
02-07 14:59:13.768: ERROR/TalkProvider(5904):     at com.google.android.gsf.gtalkservice.DatabaseHelper.getOffTheRecordCursor(DatabaseHelper.java:756)
02-07 14:59:13.768: ERROR/TalkProvider(5904):     at com.google.android.gsf.gtalkservice.ChatSession.queryOtrCursor(ChatSession.java:206)
02-07 14:59:13.768: ERROR/TalkProvider(5904):     at com.google.android.gsf.gtalkservice.ChatSession.<init>(ChatSession.java:168)
02-07 14:59:13.768: ERROR/TalkProvider(5904):     at com.google.android.gsf.gtalkservice.ChatMgr.createChatSession(ChatMgr.java:264)
02-07 14:59:13.768: ERROR/TalkProvider(5904):     at com.google.android.gsf.gtalkservice.ChatMgr.processIncomingMessage(ChatMgr.java:721)
02-07 14:59:13.768: ERROR/TalkProvider(5904):     at com.google.android.gsf.gtalkservice.ChatMgr.processPacket(ChatMgr.java:521)
02-07 14:59:13.768: ERROR/TalkProvider(5904):     at org.jivesoftware.smack.PacketReader$ListenerWrapper.notifyListener(PacketReader.java:1860)
02-07 14:59:13.768: ERROR/TalkProvider(5904):     at org.jivesoftware.smack.PacketReader.processListeners(PacketReader.java:451)
02-07 14:59:13.768: ERROR/TalkProvider(5904):     at org.jivesoftware.smack.PacketReader.access$200(PacketReader.java:91)
02-07 14:59:13.768: ERROR/TalkProvider(5904):     at org.jivesoftware.smack.PacketReader$3.run(PacketReader.java:154)
02-07 14:59:13.768: ERROR/Smack/Packet(5904): [PacketReader] listenerThread: caught exception
02-07 14:59:13.778: ERROR/Smack/Packet(5904): notify conn error. close connection!
02-07 14:59:13.778: ERROR/Smack/Packet(5904): java.lang.NullPointerException
02-07 14:59:13.778: ERROR/Smack/Packet(5904):     at com.google.android.gsf.gtalkservice.ChatSession.queryOtrCursor(ChatSession.java:208)
02-07 14:59:13.778: ERROR/Smack/Packet(5904):     at com.google.android.gsf.gtalkservice.ChatSession.<init>(ChatSession.java:168)
02-07 14:59:13.778: ERROR/Smack/Packet(5904):     at com.google.android.gsf.gtalkservice.ChatMgr.createChatSession(ChatMgr.java:264)
02-07 14:59:13.778: ERROR/Smack/Packet(5904):     at com.google.android.gsf.gtalkservice.ChatMgr.processIncomingMessage(ChatMgr.java:721)
02-07 14:59:13.778: ERROR/Smack/Packet(5904):     at com.google.android.gsf.gtalkservice.ChatMgr.processPacket(ChatMgr.java:521)
02-07 14:59:13.778: ERROR/Smack/Packet(5904):     at org.jivesoftware.smack.PacketReader$ListenerWrapper.notifyListener(PacketReader.java:1860)
02-07 14:59:13.778: ERROR/Smack/Packet(5904):     at org.jivesoftware.smack.PacketReader.processListeners(PacketReader.java:451)
02-07 14:59:13.778: ERROR/Smack/Packet(5904):     at org.jivesoftware.smack.PacketReader.access$200(PacketReader.java:91)
02-07 14:59:13.778: ERROR/Smack/Packet(5904):     at org.jivesoftware.smack.PacketReader$3.run(PacketReader.java:154)

몇일째 헤매고 있습니다..ㅜ.ㅜ

조언부탁드립니다..