Not able to create proxy class from wsdl file

Question

Hi all, I have been given a xxxxx.wsdl file and some xsd files.I have to create the proxy class. I have tried wsdl command and svcutil but not able to create it.

1. in case of wsdl command "wsdl xxxxx.wsdl" it gives error "Element message names xxxxxxxportypefrom namespace yyyyyy is missing "
2. in case of svcutil command "svcutil xxxxx.wsdl *.xsd" it throws error like "Can not import binding wsdl:binding Detail :Element message named xxxxxporttype from namespace yyyyyy is missing
3. The intresting part is when i issue the above command with /dconly /xmlimporttypes attributes datacontracts is getting created

Please suggest.Its urgent

Thanks