Bought MotionComposer 1.7 as part of bundle from StackSocial only to find that the software, once downloaded, will not open on Mac OS X 10.9 ... and there seems to be no way of contacting the developer for support. Indeed, when I try clicking on the app, I get a message saying "MotionComposer" can't be opened because it is from an unidentified developer. Will not be giving my money to either StackSocial or MotionComposer from here on, just posting this so others can try to avoid this scam. And for MacUpdate ... if I can't even open the program OR get support, I don't know why this even deserves the minimum .5 rating. I wish the option for less than 0 were available to indicate the waste of time and money.