[steve@batcave:~/rails/la(master)]$ rvm rbx
[steve@batcave:~/rails/la(master)]$ rake gems:install
(in /Users/steve/rails/la)
rake aborted!
Unable to load - /Users/steve/.rvm/gems/rbx-1.1.0-20100923/gems/hpricot-0.6.164/lib/universal-java1.6/fast_xs.bundle

(See full trace by running task with --trace)
[steve@batcave:~/rails/la(master)]$ gem uninstall hpricot
Successfully uninstalled hpricot-0.6.164
[steve@batcave:~/rails/la(master)]$ gem install hpricot -v=0.6.164
Building native extensions.  This could take a while...
Successfully installed hpricot-0.6.164
1 gem installed
[steve@batcave:~/rails/la(master)]$ gem uninstall hpricot
Successfully uninstalled hpricot-0.6.164
[steve@batcave:~/rails/la(master)]$ rake gems:install
(in /Users/steve/rails/la)
rake aborted!
Could not find RubyGem hpricot (= 0.6.164)
/Users/steve/rails/la/Rakefile:4:in `__script__'
(See full trace by running task with --trace)
[steve@batcave:~/rails/la(master)]$ gem list

*** LOCAL GEMS ***

actionmailer (2.3.5)
actionpack (2.3.5)
activemerchant (1.4.0)
activerecord (2.3.5)
activeresource (2.3.5)
activesupport (2.3.5)
builder (3.0.0)
rack (1.0.1)
rails (2.3.5)
rake (0.8.7)
[steve@batcave:~/rails/la(master)]$ gem install hpricot -v=0.6.164
Building native extensions.  This could take a while...
Successfully installed hpricot-0.6.164
1 gem installed
[steve@batcave:~/rails/la(master)]$ gem list

*** LOCAL GEMS ***

actionmailer (2.3.5)
actionpack (2.3.5)
activemerchant (1.4.0)
activerecord (2.3.5)
activeresource (2.3.5)
activesupport (2.3.5)
builder (3.0.0)
hpricot (0.6.164)
rack (1.0.1)
rails (2.3.5)
rake (0.8.7)
[steve@batcave:~/rails/la(master)]$ rake gems:install
(in /Users/steve/rails/la)
rake aborted!
Unable to load - /Users/steve/.rvm/gems/rbx-1.1.0-20100923/gems/hpricot-0.6.164/lib/universal-java1.6/fast_xs.bundle

(See full trace by running task with --trace)
[steve@batcave:~/rails/la(master)]$ gem which hpricot
/Users/steve/.rvm/gems/rbx-1.1.0-20100923/gems/hpricot-0.6.164/lib/hpricot.rb
[steve@batcave:~/rails/la(master)]$ irb
rbx-1.1.0-20100923 > require 'rubygems'
 => false
rbx-1.1.0-20100923 > require 'hpricot'
LoadError::InvalidExtensionError: Unable to load - /Users/steve/.rvm/gems/rbx-1.1.0-20100923/gems/hpricot-0.6.164/lib/universal-java1.6/fast_xs.bundle
   from Rubinius::NativeMethod.load_extension at kernel/common/native_method.rb:25
   from Rubinius::CodeLoader#load_library at kernel/delta/codeloader.rb:158
   from Rubinius::CodeLoader#require at kernel/common/codeloader.rb:41
   from Rubinius::CodeLoader.require at kernel/common/codeloader.rb:140
   from Kernel(Object)#gem_original_require (require) at kernel/common/kernel.rb:707
   from Kernel(Object)#require at /Users/steve/.rvm/rubies/rbx-1.1.0-20100923/lib/rubygems/custom_require.rb:31
   from main.__script__ at /Users/steve/.rvm/gems/rbx-1.1.0-20100923/gems/hpricot-0.6.164/lib/hpricot/builder.rb:2
   from Rubinius::CodeLoader.require at kernel/common/codeloader.rb:145
   from Kernel(Object)#gem_original_require (require) at kernel/common/kernel.rb:707
   from Kernel(Object)#require at /Users/steve/.rvm/rubies/rbx-1.1.0-20100923/lib/rubygems/custom_require.rb:31
   from main.__script__ at /Users/steve/.rvm/gems/rbx-1.1.0-20100923/gems/hpricot-0.6.164/lib/hpricot.rb:26
   from Rubinius::CodeLoader.require at kernel/common/codeloader.rb:145
   from Kernel(Object)#gem_original_require (require) at kernel/common/kernel.rb:707
   from Kernel(Object)#require at /Users/steve/.rvm/rubies/rbx-1.1.0-20100923/lib/rubygems/custom_require.rb:36
   from { } in Object#irb_binding at (irb):2

Caused by:
LoadError: Could not open library /Users/steve/.rvm/gems/rbx-1.1.0-20100923/gems/hpricot-0.6.164/lib/universal-java1.6/fast_xs.bundle - dlopen(/Users/steve/.rvm/gems/rbx-1.1.0-20100923/gems/hpricot-0.6.164/lib/universal-java1.6/fast_xs.bundle, 2): Symbol not found: _ruby_digitmap
   from FFI::DynamicLibrary#initialize at kernel/platform/library.rb:225
   from Rubinius::NativeMethod.load_extension at kernel/common/native_method.rb:23
   from Rubinius::CodeLoader#load_library at kernel/delta/codeloader.rb:158
   from Rubinius::CodeLoader#require at kernel/common/codeloader.rb:41
   from Rubinius::CodeLoader.require at kernel/common/codeloader.rb:140
   from Kernel(Object)#gem_original_require (require) at kernel/common/kernel.rb:707
   from Kernel(Object)#require at /Users/steve/.rvm/rubies/rbx-1.1.0-20100923/lib/rubygems/custom_require.rb:31
   from main.__script__ at /Users/steve/.rvm/gems/rbx-1.1.0-20100923/gems/hpricot-0.6.164/lib/hpricot/builder.rb:2
   from Rubinius::CodeLoader.require at kernel/common/codeloader.rb:145
   from Kernel(Object)#gem_original_require (require) at kernel/common/kernel.rb:707
   from Kernel(Object)#require at /Users/steve/.rvm/rubies/rbx-1.1.0-20100923/lib/rubygems/custom_require.rb:31
   from main.__script__ at /Users/steve/.rvm/gems/rbx-1.1.0-20100923/gems/hpricot-0.6.164/lib/hpricot.rb:26
   from Rubinius::CodeLoader.require at kernel/common/codeloader.rb:145
   from Kernel(Object)#gem_original_require (require) at kernel/common/kernel.rb:707
   from Kernel(Object)#require at /Users/steve/.rvm/rubies/rbx-1.1.0-20100923/lib/rubygems/custom_require.rb:36
   from { } in Object#irb_binding at (irb):2
rbx-1.1.0-20100923 >
rbx-1.1.0-20100923 >   exit