Error when consuming web service


I am having trouble creating a consuming web service in webMethods Developer. I get the following error:

“ [ISS.0092.9001] Server Error: src-resolve: Cannot resolve the name ‘ns0:PurchOrderDbnSkuViewSDO’ to a(n) ‘type definition’ component. [null]”

This error is on a response element with complex type containing a couple of simple types in my WSDL. What is strange is that I have another complex type in the same WSDL which doesn’t give me this error. I checked and doubled checked the references in the XSD files and everything seems to be OK. I can even consume and use this web service with something like SOAPUI Pro without any problem, but with webMethods Developer it’s as if it cannot find the declaration of that particular complex type. Please help?