21:21:01shinmeraagain, that first url is not supposed to work, unless you do extra work to make it work. the second error you'll have to investigate. it means there's a problem generating that page.
21:21:14shinmerayou can do (setf radiance:*debugger* T) to get the slime debugger on errors.
21:21:42shinmerathe warning of the environment will always happen on first load, simply continuing through it is the right way to go.
21:21:55shinmerahow the configuration can be changed is covered at the end of the tutorial.