When having a custom tool defined to download and install
http://nodejs.org/dist/v0.10.22/node-v0.10.22-darwin-x64.tar.gz
, it somehow fails to untar that correctly, not placing all the files in the correct subfolder, thus fails node to run correctly.

When replacing the download job with a shell-part that does this manually, it works just fine.

This might be a problem with the jvm/libraries outside custom tools on OS X, but i didn't manage to figure out where or what it calls, so i decided to report it here for reference.