I have Windows XP. In December 2007, I purchased the Platinum version of DVD Fab but not the mobile option. Until recently, I never used it and just used the DVD Fab v.4 instead since the mobile option was included. Well, now my ipod is not recognizing my attempts are copying my movies. So I decided to buy the mobile version to add on. I did and I tried activating it according to what the email said but it isn't working. It keeps telling me I have the trial version, etc. I put in the registration key of the regular Dvd Fab version 5 that I purchased a year ago and that also doesn't register. Help! I love watching my movies on the go and am so frustrated!