that's all good info. Unfortunately a lot of my Sonar 8.5 projects were done in 32 bit mode due to some of the plugins I liked "tape simulator" being one a quite a few, thus the reason about original registration licenses and codes etc. ...I was also on XP at the time of original install. Luckily they were still the original cakewalk when I switched to Windows 7 ... When I open CbB many of the plugins are missing even in 64 bit version some of those aren't there either. That's why I am hoping to clone my drive and do my 10 upgrade on that. I will always have my Windows 7 (offline) to rely on. I just actually prefer the older interface and work flow of 8.5 Producer to be honest, both 64 and 32 bit versions... only issue with 32 is you are limited to 8 gigs of ram and i have 32 gigs installed. Stayed with 8.5 when i decided that yearly liscense fees were for the birds!