dyld: lazy symbol binding failed: Symbol not found: _rb_enc_to_index

Greetings, I've a issue very similar to: Ticket #968 - "NATIVE" symbol is not solved within rubygems., but this time the symbol didn't found is: _rb_enc_to_index my checked out revision is: 5235. require 'hpricot' dyld: lazy symbol binding failed: Symbol not found: _rb_enc_to_index Referenced from: /Library/Frameworks/MacRuby.framework/Versions/0.9/usr/lib/ruby/Gems/1.9.2/gems/hpricot-0.8.3/lib/fast_xs.bundle Expected in: flat namespace dyld: Symbol not found: _rb_enc_to_index Referenced from: /Library/Frameworks/MacRuby.framework/Versions/0.9/usr/lib/ruby/Gems/1.9.2/gems/hpricot-0.8.3/lib/fast_xs.bundle Expected in: flat namespace Thanks, Franco