Using esellerate SDK in xcode problem-Collection of common programming errors

The problem is that the EWSMac.framework was never meant to be linked against in your application – it’s loaded dynamically at runtime by the libEWS.a static library. Try removing this engine, adding the compressed one to your project, and linking against the libEWS.a file (which gives you all of the entry points into the SDK). Strange, I know, but this was done due to a security model that encrypts the binary in the framework, only allowing it to be called from their static library.