help with db

[nrtzz 0]

Demonbuddy v1.1.3036.462 started
Logging in...
Error while authenticatingSystem.Reflection.TargetInvocationException: 调用的目标发生了异常。 ---> System.ServiceModel.CommunicationObjectFaultedException: 通信对象 System.ServiceModel.Channels.ServiceChannel 无法用于通信，因为其处于“出错”状态。

Server stack trace: 
   在 System.ServiceModel.Channels.CommunicationObject.ThrowIfDisposedOrNotOpen()
   在 System.ServiceModel.Channels.ServiceChannel.EnsureOpened(TimeSpan timeout)
   在 System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout)
   在 System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation)
   在 System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)

Exception rethrown at [0]: 
   在 System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
   在 System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
   在 Buddy.Auth.SR.IA.Do(Byte b, Object[] args)
   在 Buddy.Auth.SR.AClient.Do(Byte b, Object[] args)
   --- 内部异常堆栈跟踪的结尾 ---
   在 System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
   在 System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)
   在 System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   在 You.Proxy._c_0_d_1(Object s, String n, Byte o, Object[] a)
   在 ‏‬‬‍‫‍‭‭‫‪‍‬‏‎‏‮‪‪‍‌‏‌‍‮.‫‍‫‮‏‫‏‏‬‌‍‮‌‭‬‫‎‫‌‫‮.b074041d8c1c(‮‪‍‪‮‍‮‮‬‎‎‮‏‬‎‎‌‏‎‮‫‌‏‮‮ , Object[] )
   在 ‏‬‬‍‫‍‭‭‫‪‍‬‏‎‏‮‪‪‍‌‏‌‍‮.‫‍‫‮‏‫‏‏‬‌‍‮‌‭‬‫‎‫‌‫‮.‫‬‪‮‮‭‪‫‍‮‫‮‬‭‏‏‭‫‎‬‍‮(String , Byte , Int64 )
   在 Demonbuddy.MainWindow.‬‍‬‫‭‬‪‪‬‮‎‭‎‭‍‎‎‮‮(‫‍‫‮‏‫‏‏‬‌‍‮‌‭‬‫‎‫‌‫‮ )
 

 

pls tell me how to slove this.

[manobra 1]

Please, read this...