Cone Models .class not generated

Hi, I am trying to generate and convert to a cone model. When I try to ‘Convert Image to Cone Catch’, the model I have generated does not appear in the drop down list. I think this is because when I generate a cone model (using either the ‘Cone Mapping from Chart’ or ‘Cone Mapping from Spectral Sensitivities’), the .java file (e.g.’eIm_52mm_Bluetit_D65_.java’) is produced but not the .class file (e.g. eIm_52mm_Bluetit_D65_.class).

What am I doing wrong?!