On top of @DavidWestley’s suggestions, have you installed Easel Local?
this has the be installed on your machine before Easel will work, so if you haven’t or even if you have, you may want to go and install it.
If you get an “unidentified developer” error popping up, just right click (two finger click on the trackpad) on the Easel Local and choose “Open” from the menu that pops up. It will give you a different warning, with the option to open anyway. Once you do this for one app, that same app will open with a double click from then on.
I have only really seen 3 people with this problem on the Mac so I’m not sure that qualifies as “a lot of us”, but I can understand the frustration. Especially when the majority of the Mac users with X-Carves just plugged it in and it just worked right off the bat.