If sqlite3 is having problems building native extensions on Windows, uninstall your current version of the sqlite3-ruby gem.
gem uninstall sqlite3-ruby
and install version 1.2.3
gem install sqlite3-ruby -v1.2.3
Tags: issues, ruby on rails, sqlite, windows
[...] you will want to make sure you are using a version of the sqlite gem that supports windows: gem install sqlite3-ruby [...]