I've had a number of issues getting this installed on my recently purchased Vista-64 Ultimate OS. I had a previous version of DVDNExtCopy and thought that the version I originally purchased was dated and didn't have the proper code for Vista. After 4 weeks of mindless technical support with the company, I was no further ahead. Two months after that, I calmed down enough to give it another try and I then decided to purchase another copy of DVD next copy, thinking that the updated version would fix my issue; no such luck. When I try to install, it seems to go through the install process and at the very end I get a Microsoft pop-up window that states: "DVDNextCopy Main Client has Stopped Working". At this point everything disappears and I'm back at square one. This is the same issue that I have installing an earlier version. For the record, my latest version is 184.108.40.206 Any suggestions?