Yosemite Installation

I installed Animate 3 Pro, but the license wizard just keeps coming up every time I try to open it. I have entered the license number over and over to no avail. Yes, I did double-check to make sure the license was correct. Any thoughts on how to get it to open?

Did you returned your License before installing Yosemite ?
Have you installed the “Yosemite Patch” ?
https://www.toonboom.com/knowledge-base/3871