You can download from here a new version of the hbm2net T4 enabled. This version has a better command line parsing/error handling, and the configuration file to provide ( optionally ) is validate in order to report some meaningful error messages when needed. The utility is still command line, I suggest...
I've just published a first drop of an hbm2net modified version to enable T4. You can find it here or here . Hbm2net is useful in generating the classes dto views or whatever you want starting from the hbm files. The presented version supports code generation via T4, so you can use the same renderer...