Internal Error when Installing Some Addons

[Azelius]

Hey! I'm getting an Internal Error with 95% of the Addons I try to install with the MMOUI Minion client. I managed to Install Necrosis without problems, but I can't get Nauticus, Xperl, Atlas Loot or Quartz to install. I installed Quartz manually, and it worked perfectly and my MMOUI Minion detected it. But, whenever I try to update it, I get the Internal Error displayed in ominous red letters. It downloads correctly, and the internal error only appears after the download. Thanks for the help!

I'm running Mac OS X on a Macbook Pro.