Trouble with Unarchiving .xz file

I am running macOS Sierra 10.12.3 and I am having trouble downloading the most recent Nightly Build (fae1efa). I am attempting to download the file, but once it downloads as a .xv file, I try to Unarchive it and I get a “there was a problem reading the file” prompt from The Unarchiver application. I’m not too educated when it comes to fixing these problems, but I am great at following directions. Any help is appreciated. Thanks!

System Information

  • Operating System: macOS Sierra 10.12.3
  • CPU:
  • GPU:
  • Citra Version (found in titlebar): Nightly Build - fae1efa
  • Game:
  • Screenshot of Issue (include the full Citra window including titlebar):

Log:
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The file extension should be tar.xz. Does this occur with every nightly build that you download? Please ensure that your’e downloading from the official source here.