Mission Critical HTTP Header issue

Hi All,

This is my first post so please be gentle. I am not a developer, but have a good understanding of technology and servers.

Anyway, we are having some major issues with sales tracking with our bespoke tracking solution. Effectively we're missing about 60% of the sales that we should be recording. There are also issues with some of the pages on the site that are giving some bugs to our partners. We think these issues are all realted to the HTTP header codes that are getting added to each page we serve, or a more underlying issue with the way the server is setup.

Background -

MS Server 2008
SQL 2008
application - ASP.NET 3.5

Problem -

When trying to access this page through another application we get a huge number of errors and does not load. As you can see it is simply just a text file and should be easily read, however something is wrong -

http://tracking.onefeed.co.uk/export..._babysmart.txt

When putting this url into here we get an object error-

http://oyoy.eu/page/headers/Default.aspx

also

http://gsitecrawler.com/tools/Server-Status.aspx

These site both display error messages that only happen on this url - http://tracking.onefeed.co.uk

Does anyone have any idea what might be causing the problem. I hope it's a very simple fix.

Please help me!

Rich

Mission Critical HTTP Header issue - wew think?!