Problem in debugging a Web Service

[Sathyaish]

I've written a Web Service that has main service class. Let's call the
main class that exposes the service interface as Service1.

So, we have:

public class Service1: System.Web.Serv ices.WebService
{
//code
}
I also have a business object that I am going to name BusinessObject,
for example's sake. This object is built in the service module/dll as a
class like so:
namespace BusinessObjects
{
public class BusinessObject
{

private SomeOtherClass mReferenceTypeM ember;
//the field mReferenceTypeM ember is exposed through a property
called ReferenceTypeMe mber
//code
public BusinessObject( )
{
//nothing for now
}
}
}

Note that there is only one default ctor for the BusinessObject class
and that doesn't do anything.

I compile. Build a DLL. Then I add a test project to this project. I
add a Web Reference in the Test project to point to the asmx for the
above-mentioned service. The test project and the service are both a
part of the same solution. The test project is created to test the
service.

In the test project I do,

//call the default constructor
TheAliasOfTheWe bReference.Serv ice1.BusinessOb ject bo = new
TheAliasOfTheWe bReference.Serv ice1.BusinessOb ject();

bo.ReferenceTyp eMember.SomeVal ueTypeMember = "Value";
I get an object not set to an instance exception. Reasonable!
So, I go back to the service asmx.cs file and go straight to the class
BusinessObject and modify the default constructor to do this:
namespace BusinessObjects
{
public class BusinessObject
{

private SomeOtherClass mReferenceTypeM ember;
//the field mReferenceTypeM ember is exposed through a property
called ReferenceTypeMe mber
//code
public BusinessObject( )
{
this.mRefrenceT ypeMember = new SomeOtherClass( );
}
}
}

Then, I rebuild the service.
I go to the test project. I delete the old Web Reference. I add a new
Web Reference to the same DLL (I've burnt my fingers there in not
doing that).

I insert a breakpoint at the following line

//call the default constructor
TheAliasOfTheWe bReference.Serv ice1.BusinessOb ject bo = new
TheAliasOfTheWe bReference.Serv ice1.BusinessOb ject();
in the test project.
I expect it to step through the source code in my service. It doesn't.
And it still throws the object instance set to nothing exception.

What gives?