Hey there - unable to open the app on a mac (10.11.6) - it's saying "The Application 'From Ivan' can't be opened" - no error number, unfortunately.
Eep! I'll take a look at it. Thanks for letting us know!
Okay, I've uploaded a new build. You'll have to re-download the OSX version to try it out. I tried a slightly different build process this time around, and tested it on a Mac laptop, so I'm hoping it will work for you. If not, please let me know and we will figure out what is going wrong!