Thank you very much for your help. Surely I’m doing something wrong. I’ve downloaded a pair of the multiple files “houdini 18.5.532” that are in that serve. After intalled one or another I’ve received this error message: “License manager: :1715: No server found running. Please start the server before retrying”. I’ve searched solution in other sites, but witouh succes. Can you help me? Thnx in advance