object reference not found exception message is thrown when i attempt to invoke GetDomains method.

Here is the code im using:

          public string getDomainNames()
  {
   K2Manager myK2Mgr=new K2Manager();
   StringBuilder strDomainNames=new StringBuilder();
   int count=0;

   try
   {
    Domains myDomains=myK2Mgr.GetDomains();
count=myDomains.Count;
    foreach(Domain myDomain in myDomains)
    {
     strDomainNames.Append(myDomain.Name);
     strDomainNames.Append('|');
    }
    return strDomainNames.ToString()+" "+count;
   }
   catch(Exception ex)
   {
    ex.ToString();
    return ex.Message+" "+count;
   }
  }

myDomains.Count property returns the exception obj ref not set

Im running a development machine which has k2 studio and k2service manager installed in it (k2.net 2003 SP 3).

My machine connects to a domain server in which ADS is installed and it is configured as my k2server.

I studied the Help doc and searched for the K2server.config file it has the following tags in my local machine.

         <K2Server>
 <Database/>
 <LogDatabase/>
 <DefaultSMTPServer/>
</K2Server>

whereas in my domain server/K2server it has appropriate values for all the tags.

the code given by me above, im using it in an asp.net web application, which is in my development machine. I have configured the virtualdirectory security settings as follows

allow iis to manage passwords==false
anonymous access == enabled
anonymous user account: An user account in ADS.

I get the myDomains object returning null reference.Hope someone Can help me solve my problem. Please explain whats happening and why i get this error.

thanks to you all