Hi, Currently, the -v option only displays the version of LibLouisUTDML . I would suggest that the -v option also should display the version of the underlying LibLouis. In that way, you can be sure of what version you are using, for instance, if you have more than one version of LibLouis on your computer. Likewise, I would suggest that the "About" dialog in BrailleBlaster also should display the version of the underlying components. Sorry, if I am off topic for this list. Bert, once again, thank you. The Windows binaries of LibLouisUTDML seem to be working fine. Best regards Bue Vester-Andersen For a description of the software, to download it and links to project pages go to http://www.abilitiessoft.com