E00003:The 'AnetApi/xml/v1/schema/AnetApiSchema.xsd:id' element is invalid - .NET SDK

[unleashyourgeek]

When I try to process a credit card transaction I get this error. 

What is the cause? Authorize.net refuses to do anything to help us and tell us to come here to the Forum for assistance from the general public.

This is a Wordpress site.

Thanks.

[RichardH]

@unleashyourgeek

Are you using a WordPress plugin or using our .NET SDK to create your own? Which version of the SDK?  Can you share your code so we can examine?

Richard