Dirty Metadata?

Hi, in a Web Dynpro application I tried to create a Model which implements a 3rd party webservice as model, I specified the wsdl and after that nothing happends, neither appeared a model in my perspective nor a line of code in any file generated. After that, I tried to create the model again and I can’t create de model on that package because it says that the package is not empty.

Any idea where could be lost a reference or something like that?

Regards,

Jose