Our development computer has both 32 and 64bit ruby installed. The tzinfo-data needs to specify the platforms which blows up the Rails 4.2 app.
For 64bit ruby, the Gemfile has:
gem 'tzinfo-data', platforms: [:x64_mingw, :mingw, :mswin]
For 32bit ruby, the `Gemfile' has:
gem 'tzinfo-data', platforms: [:mingw_20, :mingw, :mswin]
App blows up if running 32bit ruby with 64bit platform or vise verse.
How to specify platform which is good for both 32 and 64bit ruby?
This should work on both 32-bit and 64-bit Ruby:
gem 'tzinfo-data', platforms: [:x64_mingw, :mingw, :mswin]
You could also remove the platforms option altogether:
gem 'tzinfo-data'
Make sure that you've run the bundle update command with both your 32-bit and 64-bit Ruby versions to install the tzinfo-data gem into that Ruby installation.
For more information about what the platforms option does, please refer to the Gemfile manual page.