This is the first time I've purchased your product, I really love it!! But the last version for the Mac, since I upgraded to Mavericks it has a lot of problems, always crashing and missing files... I also couldn't contact support because message has never sent. By the way, I'm again glad to purchase the upgrade, it's so helpful to my studies at Berklee College of Music, where I can import audio and edit it!! Hope this time I don't have the same issues as with the ñast version installed on Mavericks! Thanks!