Demo won't run on Mac

I’ve downloaded the demo from the Siralim site. When I attempt to run the game I get the following error: “Siralim” is damaged and can’t be opened. You should move it to the trash.

The version is 2.0.13
I also downloading it from ModDB and tried using Firefox instead of Chrome… same issue.

I’m running a MacBook Pro Retina OSX Yosemite 10.10.3

Thanks in advance

Fixed issue!! Had to go into system preferences and allow all .app files to run. Will leave post here in case anyone else has issue.

Thanks for sharing the solution; glad to see it’s working for you now!