For the last year I have not been able to get CloneDVD to complete an MP4 conversion of anykind. Prior to this time, it worked beautifully. I recently reinstalled everything from the ground up on my desktop in hopes of fixing this problem but it still did not solve it. I am running Windows 7 64 bit Home Premium. I have the latest versions of AnyDVD, CloneDVD, and CloneDVDmobile installed. The other two programs work fine, but mobile doesn't. I also have the following programs installed, in case anyone is aware of any conflicts with them: Itunes Bitdefender Total Security Microsoft Office 2007 Quickbooks Pro 2010 I have tried all of the recommendations from the forums and Slysoft support that I have been able to get. Including: run as administrator, windows xp2 and 3 compatibility mode, uninstall and reinstall, scream and yell, jump up and down, curse, etc. Any insights that would help me are appreciated.