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Hi Trying to install mongo_mapper and this is the error I get.
gem install mongo_mapper
ERROR: While executing gem ... (NoMethodError)
undefined method `call' for nil:NilClass
anyone have a idea what’s wrong?
The problem seems to be with the 1.6.0 version of the mongo gem that was released a couple of days ago. Installing version 1.5.2 of the mongo gem worked fine.
Try installing the mongo gem before you install mongo_mapper: