Thanks Bill, for your suggestion on instiki debugging... However, I am still 
a little confused, about how the MVC system work. I have encountered a bug 
in instiki. This bug seems to happen before flow control is handed to 
wiki.rb. I don't know where to locate the entry point of the WEBrick 
module...

Is there any tutorial material for WEBrick and Ruby on Rails?

Thanks in advance for any suggestions!

Shannon