tWebServiceInput - compiler wants library that is installed ....

I am building a simple web service flow using tWebServiceInput. 


The compiler complains about a missing library (jaxrpc.jar / e.g. mvnSmiley Surprisedrg.talend.libraries/jaxrpc/6.0.0/jar).  The 'Action' field' to download and install is disabled.  I checked the 'Modules' view and the jar IS installed (Context: tWebServiceInput, Module jaxrpc.jar, Maven URI same as above).


Any idea why this is the case and what I need to do to fix it?


Thanks Chris