I ran into this issue too. i used this tutorial: https://superuser.com/questions/1345755/how-to-fix-the-application-cant-be-opene... the file you should use chmod +x on is in LCS.app/Contents/MacOS/LCS. Then in your Macs' privacy and security settings if you scroll down you should see LCS was not opened- make sure that you give permission, and it should open then