startup problem

I have been using Fotomagico to make slideshows for quite some time. I used it successfully two days ago.Today, when I try to open the program, a message pops up saying that the application can’t be opened. I am using OS X Yosemite on an iMac. I am able to open the app on my MacBook Pro that hasn’t been upgraded to Yosemite. Any suggestions?

What version of FotoMagico are you running? the latest version of FotoMagico 4 runs perfectly fine on Yosemite as well as on Mavericks