see mod_ruby Documents
 http://www.modruby.net/doc/index.en.html
and
 apache/ruby-run.rb , apache/eruby-run.rb

> Where is 'Apache::MyAppRun.instance' defined?
> The only thing I see defined is 'MyApp#handler'.

I'm sorry, it is my mistake.

-    RubyHandler Apache::MyAppRun.instance
+    RubyHandler Apache::MyApp.instance

# My English is weak. I do not want to use English not much.
# I am good at Japanese.

-- 
MoonWolf <moonwolf / moonwolf.com>