Connecting to server using MSXML2.ServerXMLHTTP

My page is connecting to a server to retrieve search results. My code looks like this:

Dim TestString                               
url = "http://sitelife.construction.com/ver1.0/Direct/Jsonp?r={%22Requests%22:[{%22SearchAction%22:{%22NumberPerPage%22:10,%22OnPage%22:1,%22SearchString%22:%22Pennsylvania%22,%22SearchType%22:%22BlogPost%22}}],%22UniqueId%22:0}"
set xmlhttp = CreateObject("MSXML2.ServerXMLHTTP")
xmlhttp.open "GET", url, false
xmlhttp.send "" 
TestString = xmlhttp.responseText
'Response.write TestString

set xmlhttp = nothing

This works fine on my personal server, the results are here:
http://www.glowfishtw.com/asp_parse.asp

But when I try to run the same page on the development server at my office I get either the error:

msxml3.dll error '80072efd'
A connection with the server could not be established

or

msxml3.dll error '800c0005'
The system cannot locate the resource specified.

I get these different errors through trying different connection types I change this line:
set xmlhttp = CreateObject("MSXML2.ServerXMLHTTP")

to one of these

set xmlhttp = Server.CreateObject("Microsoft.XMLHTTP")
set xmlhttp = Server.CreateObject("Msxml2.ServerXMLHTTP.3.0")
set xmlhttp = Server.CreateObject("Msxml2.XMLHTTP.3.0")

none of these work on my development server at the office. SO I don't think it is the version of xmlhttp.

Does anyone have any ideas what might be causing these errors?

I am able to connect to the server using javascript. The following piece of code does work on both servers, but I am unable to duplicate it in asp VBscript.

<script language="JavaScript">
       var requestBatch = new RequestBatch();
       var serverUrl = "http://sitelife.construction.com/ver1.0/Direct/Process";
   
       var searchType = "BlogPost";  // others are Comment, ForumPost, Gallery, Photo, Video
       
       // var searchString = "Title:Pennsylvania";  // To search only the title for Penn
       var searchString = "Pennsylvania";
             
       requestBatch.AddToRequest(new SearchAction(searchType, searchString, 10, 1));
       requestBatch.BeginRequest(serverUrl, clientCallBack);

       function clientCallBack(responseBatch) {
         // console.dir(responseBatch);  // -- use this in Firefox (only) to show the responseBatch object in the console to see what data is available.

       }
   </script>