Webresource css file issue

[jaydev]

Hi All,
I have created a custom control and used the Webresources to
everything worked fine in localbox and development box. When I migrate
to production I am getting the following error

Error: The stylesheet ..../WebResource.axd was not loaded because its
MIME type, "text/html", is not "text/css".

Any Idea why this is not working? Thanks for your help.

Thanks,
Jay