Can't install via Package Management

Hello,

I'm trying to test this package on my modx website (2.4.2-pl), but I can't seem to install it via Package Management.  If I search for the package, it simply doesn't show up to be installed.

On http://modx.com/extras/package/customurls it shows "Compatible up to Revolution 2.3.x."  Maybe that just needs to be bumped up to a higher version?
