App crashes " Could not register device on Backendless server"

Could not register device on Backendless server: Server reported an error. See fault details for additional information:
java.lang.RuntimeException: Could not register device on Backendless server: Server reported an error. See fault details for additional information
at com.backendless.push.BackendlessPushService.onError(BackendlessPushService.java:88)
at com.backendless.push.BackendlessPushService$1.handleFault(BackendlessPushService.java:252)
at com.backendless.Messaging$2.handleFault(Messaging.java:255)
at com.backendless.async.message.AsyncMessage$FaultHandler.handle(AsyncMessage.java:83)
at com.backendless.async.message.AsyncMessage.handleCallback(AsyncMessage.java:41)
at com.backendless.core.AndroidCarrier$1.handleMessage(AndroidCarrier.java:37)
at android.os.Handler.dispatchMessage(Handler.java:101)
at android.os.Looper.loop(Looper.java:156)
at android.app.ActivityThread.main(ActivityThread.java:6523)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:941)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:831)

Hello,

please use this android sdk https://github.com/Backendless/Android-SDK/raw/master/out/backendless.jar it is pre-release version. there is better error handling. you will get more information about an error.