09-09 16:07:03.092    4376-4423/? D/WechatDecryption﹕ cipher_migrate return code: 1
09-09 16:07:03.142    4376-4423/? E/Database﹕ Failed to setLocale() when constructing, closing the database
    net.sqlcipher.database.SQLiteException: file is encrypted or is not a database: create locale table failed
            at net.sqlcipher.database.SQLiteDatabase.native_setLocale(Native Method)
            at net.sqlcipher.database.SQLiteDatabase.setLocale(SQLiteDatabase.java:2316)
            at net.sqlcipher.database.SQLiteDatabase.<init>(SQLiteDatabase.java:2181)
            at net.sqlcipher.database.SQLiteDatabase.openDatabase(SQLiteDatabase.java:1000)
            at net.sqlcipher.database.SQLiteDatabase.openDatabase(SQLiteDatabase.java:972)
            at net.sqlcipher.database.SQLiteDatabase.openOrCreateDatabase(SQLiteDatabase.java:1036)
            at net.sqlcipher.database.SQLiteDatabase.openOrCreateDatabase(SQLiteDatabase.java:1029)
            at com.example.wechatdecryption.WechatDecryptionTask.doInBackground(WechatDecryptionTask.java:97)
            at android.os.AsyncTask$2.call(AsyncTask.java:288)
            at java.util.concurrent.FutureTask.run(FutureTask.java:237)
            at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
            at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
            at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
            at java.lang.Thread.run(Thread.java:818)
09-09 16:07:03.152    4376-4423/? E/AndroidRuntime﹕ FATAL EXCEPTION: AsyncTask #1
    Process: com.example.wechatdecryption, PID: 4376
    java.lang.RuntimeException: An error occured while executing doInBackground()
            at android.os.AsyncTask$3.done(AsyncTask.java:300)
            at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:355)
            at java.util.concurrent.FutureTask.setException(FutureTask.java:222)
            at java.util.concurrent.FutureTask.run(FutureTask.java:242)
            at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
            at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
            at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
            at java.lang.Thread.run(Thread.java:818)
     Caused by: net.sqlcipher.database.SQLiteException: file is encrypted or is not a database: create locale table failed
            at net.sqlcipher.database.SQLiteDatabase.native_setLocale(Native Method)
            at net.sqlcipher.database.SQLiteDatabase.setLocale(SQLiteDatabase.java:2316)
            at net.sqlcipher.database.SQLiteDatabase.<init>(SQLiteDatabase.java:2181)
            at net.sqlcipher.database.SQLiteDatabase.openDatabase(SQLiteDatabase.java:1000)
            at net.sqlcipher.database.SQLiteDatabase.openDatabase(SQLiteDatabase.java:972)
            at net.sqlcipher.database.SQLiteDatabase.openOrCreateDatabase(SQLiteDatabase.java:1036)
            at net.sqlcipher.database.SQLiteDatabase.openOrCreateDatabase(SQLiteDatabase.java:1029)
            at com.example.wechatdecryption.WechatDecryptionTask.doInBackground(WechatDecryptionTask.java:97)
            at android.os.AsyncTask$2.call(AsyncTask.java:288)
            at java.util.concurrent.FutureTask.run(FutureTask.java:237)
            at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
            at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
            at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
            at java.lang.Thread.run(Thread.java:818)