Magix Support had to do changes on their side when they eventually found my stuff. It looks like everything is back. XDP19 is working again, job now finished. Vegas is back too, but all it's options have reverted to defaults . I hope this doesn't happen again - a terrible waste of time. If it does I might change to using Affinity Designer and Photo which are definitely great, but more complex IMO, and no web editor! Thanks for the various suggestions and links, they certainly helped.