I'm trying to bundle my Rails app properly but when i add the mongo_mapper_ext gem to the Gemfile i always get an error like:
Unfortunately, the gem mongo_mapper_ext (0.2.4) has an invalid gemspec. As a result, Bundler cannot install this Gemfile. Please ask the gem author to yank the bad version to fix this issue. For more information, see http://bit.ly/syck-defaultkey.
Even when my Gemfile specifies a different version than 0.2.4
# database
gem 'mongo', "1.4.1"
gem 'mongo_mapper'
gem 'mongo_mapper_ext', "0.2.7"
Any idea about the origin of the problem?
Thanks in advance.