Error in simple todo demo code of Simperium for android

I downloaded the demo code.

After running the code :

I am getting this screen. I signed in with same username and id on other device, but nothing is happening.

On entering text, I'm getting the following error :

11-30 18:29:58.731  14566-16417/com.simperium.simpletodo E/SQLiteDatabase﹕ Error inserting bucketName=todo changeVersion=
    android.database.sqlite.SQLiteConstraintException: UNIQUE constraint failed: changeVersions.bucketName (code 2067)
            at android.database.sqlite.SQLiteConnection.nativeExecuteForLastInsertedRowId(Native Method)
            at android.database.sqlite.SQLiteConnection.executeForLastInsertedRowId(SQLiteConnection.java:780)
            at android.database.sqlite.SQLiteSession.executeForLastInsertedRowId(SQLiteSession.java:788)
            at android.database.sqlite.SQLiteStatement.executeInsert(SQLiteStatement.java:86)
            at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1471)
            at android.database.sqlite.SQLiteDatabase.insert(SQLiteDatabase.java:1341)
            at com.simperium.android.GhostStore.setChangeVersion(GhostStore.java:98)
            at com.simperium.client.Bucket.setChangeVersion(Bucket.java:416)
            at com.simperium.client.Bucket.indexComplete(Bucket.java:411)
            at com.simperium.client.Channel$IndexProcessor.notifyDone(Channel.java:1126)
            at com.simperium.client.Channel$IndexProcessor.next(Channel.java:1039)
            at com.simperium.client.Channel$IndexProcessor.addIndexPage(Channel.java:1107)
            at com.simperium.client.Channel$IndexProcessor.start(Channel.java:994)
            at com.simperium.client.Channel.updateIndex(Channel.java:397)
            at com.simperium.client.Channel.access$100(Channel.java:38)
            at com.simperium.client.Channel$2.execute(Channel.java:187)
            at com.simperium.client.Channel$CommandInvoker.executeCommand(Channel.java:743)
            at com.simperium.client.Channel.executeCommand(Channel.java:713)
            at com.simperium.client.Channel.receiveMessage(Channel.java:667)
            at com.simperium.android.WebSocketManager.onMessage(WebSocketManager.java:420)
            at com.simperium.android.WebSocketManager$2.onMessage(WebSocketManager.java:211)
            at com.simperium.android.AsyncWebSocketProvider$1$2.onStringAvailable(AsyncWebSocketProvider.java:85)
            at com.koushikdutta.async.http.WebSocketImpl$1.onMessage(WebSocketImpl.java:88)
            at com.koushikdutta.async.http.HybiParser.emitFrame(HybiParser.java:420)
            at com.koushikdutta.async.http.HybiParser.access$800(HybiParser.java:46)
            at com.koushikdutta.async.http.HybiParser$5.onDataAvailable(HybiParser.java:197)
            at com.koushikdutta.async.DataEmitterReader.handlePendingData(DataEmitterReader.java:24)
            at com.koushikdutta.async.DataEmitterReader.onDataAvailable(DataEmitterReader.java:41)
            at com.koushikdutta.async.Util.emitAllData(Util.java:22)
            at com.koushikdutta.async.AsyncSSLSocketWrapper.onDataAvailable(AsyncSSLSocketWrapper.java:230)
            at com.koushikdutta.async.AsyncSSLSocketWrapper$5.onDataAvailable(AsyncSSLSocketWrapper.java:217)
            at com.koushikdutta.async.Util.emitAllData(Util.java:22)
            at com.koushikdutta.async.AsyncNetworkSocket.onReadable(AsyncNetworkSocket.java:146)
            at com.koushikdutta.async.AsyncServer.runLoop(AsyncServer.java:788)
            at com.koushikdutta.async.AsyncServer.run(AsyncServer.java:626)
            at com.koushikdutta.async.AsyncServer.access$700(AsyncServer.java:41)
            at com.koushikdutta.async.AsyncServer$13.run(AsyncServer.java:568)

Please help if anyone knows about it!

The demo app relies on the soft keyboard to add new items, so make sure to have it enabled in your emulator or device.

I'll research the sql error, but it appears to only show in the emulator log and not on a real device.