I am creating an automated import of Purchase Invoices for a client who is using Peachtree 2008 Premier, and I've downloaded Sage 50 2016.0 SDK.

I'm using the credentials that were provided when I downloaded the SDK and the function returns NULL. When I use the credentials of a current user, the function causes a Not Authorized error.

I have searched the computer for the Interop.PeachwServer.dll and I cannot find it. So, is the SDK backwards compatible with their version (15 internally)? What options do I have available to me?

public static IApplication ApplicationLogin(string pUserName, string pUserPassword)

{

ILoginSelector lLoginSelector = new LoginSelector();

ILogin lLogin = lLoginSelector.GetCurrentLoginObject() as ILogin;

return lLogin.GetApplication(pUserName, pUserPassword) as IApplication;

}