answers.rb

class Answers < Application
  provides :sscj1

  ...

  def show
    raise "Oh noes!"

    @answer = answer

    display @answer
  end

  ...

end

exceptions.rb

class Exceptions < Application
  provides :sscj1
  
  # handle NotFound exceptions (404)
  def not_found
    render
  end

  # handle NotAcceptable exceptions (406)
  def not_acceptable
    render
  end

  def internal_server_error
    render
  end

end

internal_server_error.sscj1.erb

{
  "_type":        "InternalServerError",
  "name":         <%= j @exception_name %>,
  "parameters":   <%= j params[:original_params] %>,
  <% if ::Merb::Config[:exception_details] %>
  "message":      <%= j @exception.message %>,
  "backtrace":    <%= j @exception.backtrace %>,
  <% end %>
  "request_uri":  ""
}