Ruby's narray gem installation error

Question

I'm trying to install the NArray gem for Ruby to do some math functions. I'm running Ruby version 1.8.7 on a OSX Mountain Lion

When I attempt to install the NArray gem, it produces the following error:

instance of Date needs to have method `marshal_load'

I've googled, with no luck whatsoever.

Answer 1

This seems to be due to a change in Marshal format of Date. https://github.com/rubygems/rubygems/issues/266