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splendidClient.ClientCredentials.UserName.UserName = "user";

splendidClient.ClientCredentials.UserName.Password = null;

user_auth auth = new user_auth();

auth.user_name = "user";

auth.password = null;

string s = splendidClient.test("testing");

//this works. s is "testing" at this point.

s = splendidClient.get_splendid_version();

//this also works. s is now "5.0.4058.17141"

string createResult = splendidClient.create_session("user", null);

//this fails with an System.ServiceModel.ProtocolException with an inner exception of {"The data at the root level is invalid. Line 1, position 1."}

var result = splendidClient.login(auth, "SplendidTest");

//this fails with an System.ServiceModel.ProtocolException with an inner exception of {"The data at the root level is invalid. Line 1, position 1."}

So i fired up fiddler to see what the invalid data looked like. Here's the raw view:

HTTP/1.1 200 OK

Cache-Control: private, max-age=0

Content-Type: text/xml; charset=utf-8

Server: Microsoft-IIS/7.5

Set-Cookie: ASP.NET_SessionId=nyc0q2yl2zbnalfcnxi2pu55; path=/; HttpOnly

X-AspNet-Version: 2.0.50727

X-Powered-By: ASP.NET

Date: Fri, 11 Feb 2011 22:26:06 GMT

Content-Length: 647

Object reference not set to an instance of an object.<?xml version="1.0" encoding="utf-8"?><soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:tns="http://www.sugarcrm.com/sugarcrm" xmlns:types="http://www.sugarcrm.com/sugarcrm" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"><soap:Body soap:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"><types:create_sessionResponse><create_sessionResult xsi:type="xsd:string">Success</create_sessionResult></types:create_sessionResponse></soap:Body></soap:Envelope>

This seems very weird to me. I am debugging on the server side as well. I can see that the webmethod is completing without exception. The object that it is trying to return is correct. I can't figure out what would be injecting that 'Object reference not set to an instance of an object.' into the body of the response. Also, it seems to only be occuring in methods that require username and passwords.

Just as another example, I am able to call create_lead and the lead is inserted into the database, but the client receives a response with this same problem.

Any ideas?