I'm totally new to this whole thing so please be patient with me. I'm trying to instal retro pi on an sd card using my mac. now I've downloaded the rpi sd card builder unzipped it and double clicked the app. it keeps telling me it can not open the app. so i am a complete loss here. and right off the bat totally discouraged about this whole pi thing and wondering if I've made a mistake. from my understanding all i have to do is get this retro pi operating system on the sd card install it into the pi boot it up configure it copy some rooms over and I'm good to go. so far i can't even do the first step please help.
The application “RPi-sd card builder v1.2” can’t be opened.
my version of os x is fully current and up to date I've checked to see if its a security thing being from an unknown developer I can't figure out why it won't open. I downloaded the file unzipped it and tried opening it and nothing. With the cost of the pi and shipping and memory cards power supply and case I'm into this thing almost $200 and I can't even get the sd card loaded. please any help would be appreciated i didn't expect this to be so difficult