Try method in core_extensions.rb breaks nested attributes in activerecord 2.3.2

[stanger]

This implementation of the try method is incompatible with the version that is provided by activesupport. Commenting out the definition in core_extensions.rb and using the implementation provided by activesupport appears to work fine.

Setup notes:
rails-2.3.2
acts_as_importable installed as a plugin from the git repo

[matellis]

This patch fixes the issue: http://github.com/mattdb/acts-as-importable/commit/0ef7462a6dc3edc561f3bafd6b08ac8f3c143d05

As try becomes more commonly used it would be nice to absorb this back into timriley/master