SplashID app not working

Can someone please help with with the SplashID app it would be greatly appreciated! I can NOT get it to work! I downloaded the $9.95 iphone app. went to the website and purchased/downloaded the $20 desktop for OS X, ran the install, dragged the icon to the applications folder. Try double clicking to open and the icon jumps once and then doesn't open, not even at all. Can't get to a point where i can enter my registration key, etc. If - on iphone - i go to tools, sync - it says it can't find the desktop versions...help!@!!!!