ScriptResource.axd 404 error ONLY on subdomains

[Aldimun]

I have setup my website (ASP.NET 4.0) with AJAX, running with no problems at all.When I test my website locally and on my main top level domain, there are no problems.When I'm on a subdomain page, AJAX client side framework fails to load. I observed the problem deeply and found that whenever I'm on a subdomain page, WebResource.axd DOES load but ScriptResource.axd DOESN'T load (returns 404 Not Found error). I think I should modify some entries at web.config file, but I have no idea on what to do?If you want to see the problem live, go to www.123tiendas.com/subdominios/articulo/default.aspx?id=2020 and there's no problem. Go to www.articulo.123tiendas.com/?id=2020 and you'll see the problem. (use any web developer tools to see what is returned)\[code\]GET http://articulo.123tiendas.com/ScriptResource.axd?d=BHVdt7ZKRNgWkcmIzZPX-cQ