Hi all, first of all many thanks to all those who took the time to suggest how to get Cura to work with my new laptop running Win10. I cleared the Reg but this didn't work for me. I tried changing compatibility to Win 8 this didn't work either BUT my old laptop was using Win7 (when it all worked fine), so i changed to compatibility for Win7 and voila, it all works and i am back to printing! Thanks. I still do not know why the Cura 4.4 (and all previous versions) will not work on my Win 10 laptop, but at least it is working now. Stef