This is the first time I have a problem with license. I was using RC4 for few days and today something went wrong with my bios because all settings restored to default. Also the time and date (to 1.1.2006). After booting to Windows there was a message "Invalid license" when I started Centrafuse RC4. I changed the date in bios and Windows and tried again. The same message. I tried to delete license file that I would get a message (try, register, ...) but there is the same message "Invalid license". After that I uninstalled Centrafuse, deleted Flux Media folder in Program files and tried again with clean install... and what I got? The same message "Invalid license". Now I would like to know if there is some information stored in registry also or somewhere?