Error 516 in SMP 2.3 - iOS

Hi,

I am getting Error code 516 while synchronizing data in iOS app from SMP 2.3. The device gets registered and then the app does not move forward to home screen. The log file shows following error in Xcode :

SUPConnectionStatus_DISCONNECTED, code = 516, message = Error: 516 Detail: Error sending request to server Native                Error: -2 Source: moClient.cpp 1907.

Another app with the same configuration works but when I am trying to replicate the same configurations with new app, it throws the above error. Please help.