I am on SnowLeopard (10.6.2) and in /Developer/Documentation/RubyCocoa/Frameworks/html are only a few japanese files. So I downloaded the RubyCocoa-1.0.1 tarball.  After "ruby install.rb config" and "ruby install.rb setup" without any problems I get an error when issuing "ruby install.rb doc":

myMini-2:RubyCocoa-1.0.1 kittekat$ ruby install.rb doc  
install.rb: entering doc phase...
---> framework
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby gen_bridge_doc.rb build ../bridge-doc
mkdir -p /Users/kittekat/RubyCocoa/RubyCocoa/RubyCocoa-1.0.1/framework/bridge-doc
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby -I../../ext/rubycocoa -I../../lib gen_bridge_doc/rdocify_framework.rb  '/Developer/ADC Reference Library/documentation/Cocoa/Reference/ApplicationKit/' /Users/kittekat/RubyCocoa/RubyCocoa/RubyCocoa-1.0.1/framework/bridge-doc/ruby

Working on: ApplicationKit

gen_bridge_doc/rdocify_framework.rb:29:in `open': No such file or directory - /Developer/ADC Reference Library/documentation/Cocoa/Reference/ApplicationKit/Classes/ (Errno::ENOENT)
from gen_bridge_doc/rdocify_framework.rb:29:in `entries'
from gen_bridge_doc/rdocify_framework.rb:29:in `get_reference_files'
from gen_bridge_doc/rdocify_framework.rb:150
gen_bridge_doc.rb:35:in `command': 'system /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby -I../../ext/rubycocoa -I../../lib gen_bridge_doc/rdocify_framework.rb  '/Developer/ADC Reference Library/documentation/Cocoa/Reference/ApplicationKit/' /Users/kittekat/RubyCocoa/RubyCocoa/RubyCocoa-1.0.1/framework/bridge-doc/ruby' failed (RuntimeError)
from gen_bridge_doc.rb:39:in `ruby'
from gen_bridge_doc.rb:99
from gen_bridge_doc.rb:98:in `each'
from gen_bridge_doc.rb:98
rm -rf bridge-doc
doc failed
hook /Users/kittekat/RubyCocoa/RubyCocoa/RubyCocoa-1.0.1/framework/pre-doc.rb failed:
'system /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby gen_bridge_doc.rb build ../bridge-doc' failed
try 'ruby install.rb --help' for usage
myMini-2:RubyCocoa-1.0.1 kittekat$ 

Did I miss to install something, or is this step broken in the actual MAC OSX version?

Best regards
Kittekat

P.S.:
The Bridgedoc page (http://rubycocoa.sourceforge.net/BridgeDoc) references an external page (http://www.superalloy.nl/blog/?p=6) which does not exist.