Photo gallery ajax can not be opened because it is from unidentified developer

Q: I’m having trouble opening the application.
"VisualLightBox" can not be opened because it is from unidentified developer.

Any suggestions?

A: Please, try to do following:
http://osxdaily.com/2012/07/27/app-cant-be-opened-because-it-is-from-an-unidentified-developer/

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