The most common reason for this is you have tried to upgrade using the V4 Trial and not the special upgrade download which was listed in your License upgrade email. If this is the case you need to reinstall V3 and then use the download from the link on your license email (or your backup of the file you used the first time) to install V4. On 4 October 2011 16:37, Linda Hansen <lindamhansen@gmail.com> wrote: > so I went straight to Version 4. I keyed in the registration key - > checked and double checked I had it correct, but still get a message to say > licence name and key combination are not valid. > -- Jane. Jane Taubman | www.rjt.org.uk | www.taubman.org.uk |www.fhug.org.uk