NetBeans 6.0, Leopard and running a project in browser.

rubyonrails-talk
1

NetBeans is pretty sensitive to where components are on the path. It
does not use your shell profile to setup the path. If your rails is
not setup where they think it is you can have problems. In particular
getting it to find the fast debugger is a pain. How it starts the
browser for a project is configurable to a degree. You may also want
to use the verbose debugging / logging to see what is going on.

Michael

http://wiki.netbeans.org/wiki/view/RubyDebugging#section-RubyDebugging-HowToFileABug

2

I configured ruby in Preferences -> Ruby -> Platform to be /usr/local/bin/ruby, installed the fast debugger as a gem and selected it in the same place, and all worked flawlesly from day one.

3

Yes, compiled from sources.

-- fxn