Fix YAML::Syck::DefaultKey:0x1083b59f8
When your gems complain about invalid gemspecs and illformed requirements, it is 
  most probably an error resulting from the transition from Syck to psych
  
    Show archive.org snapshot
  
. To fix this:
- go to your gemspec directory (e.g. 
/Library/Ruby/Gems/1.8/specifications/) - change 
#<Syck::DefaultKey:0x00000100e779e8>to=(equals sign) in each file that's complaining