It looks like midas is half-broken. The metadata can be retrieved but the downloaded files are empty.
Can someone reboot it?
"Retrieving extension metadata [ extensionId: 405842]"
"Downloading extension [ itemId: 548410]"
"Archive /tmp/29402-linux-amd64-WindowLevelEffect-git39baeae-2016-07-22.tar.gz.mFmokN doesn't contain any files !"
Uncaught SyntaxError: missing ) after argument list