So I'm on 10.13 High Sierra and I don't really know terminal stuff. I've been following along with the website. Downloading XCode and MacPorts up the wazoo. When I install
KDenLive, that specific file gives me this.


I try to open it in Terminal:


I was able to get it running on my old Mac running Yosemite (10.10) with no issue. But this one is giving me problems. It says it's incomplete and damaged so I try terminal commands and try to port install MacPorts and other things it says on the page. I'm at a loss here. I really wanna give KDenLive a try (I'm testing different Editing Softwares) but this is a pain to set up

Please help