Error while updating RubyGems

I got the following error message when I tried to update all my RubyGems on OS X Tiger (please notice that I did log as 'root' prior to this):

Raven:/Users/untz root# gem update all --include-dependencies Updating installed gems... Bulk updating Gem source index for: Attempting remote update of all ERROR: While executing gem ... (Gem::GemNotFoundException)     Could not find all (> 0) in the repository Raven:/Users/untz root# gem update --include-dependencies Updating installed gems... Attempting remote update of actionmailer Successfully installed actionmailer-1.3.3 Successfully installed actionpack-1.13.3 Successfully installed activesupport-1.4.2 Installing ri documentation for actionmailer-1.3.3... Installing ri documentation for actionpack-1.13.3...

RDoc failure in lib/action_controller/cgi_ext/raw_post_data_fix.rb at or around line 36 column 22

Before reporting this, could you check that the file you're documenting compiles cleanly--RDoc is not a full Ruby parser, and gets confused easily if fed invalid programs.

The internal error was:

ERROR: While executing gem ... (NoMethodError)     undefined method `match_io' for -517611318:Fixnum

Any help is greatly appreciated!