wsimport giving me a WARNING src-resolve: Cannot resolve the name 'xsdLocal1:ListOfPickListValues' t

Is anyone familiar with warnings like the following when trying to generate classes from CRMOD WSDLs through Java's wsimport utility?  From the command line I am typing, "wsimport -keep Picklist.wsdl" and getting the following warnings.  

[WARNING] src-resolve: Cannot resolve the name 'xsdLocal1:ListOfPickListValues' to a(n) 'element declaration' component. 

[WARNING] src-resolve: Cannot resolve the name 'xsdLocal2:ListOfPickListValues' to a(n) 'element declaration' component. 

[WARNING] src-resolve: Cannot resolve the name 'xsdLocal3:ListOfPickListValues' to a(n) 'element declaration' component.

I am getting very similar warnings for the majority of the WSDLs I am trying to generate java classes for.  However, my application seems to be working just fine despite these warnings, and I am wondering if anyone can shed some light on how to either fix this, or if it even needs to be fixed at all?