With trunk (Version 2.4.1 alpha.2 (2012-12-26 11:54:07) using rocket server on OS X, I'm trying something I've never done before: installing an app from a url. The app I want to install is https://github.com/mdipierro/web2py-book I give it the application name 'book'.
It fails with Unable to install application "book" Python 2.7.3 started with python web2py.py --