Rails - Nov 2010 - Encoding::UndefinedConversionError on a simple file upload (rvm, MRI-1.9.2-p0, rails 3.0.1, apache+passenger)

Hello everyone.

I am having the encoding issue on a simple file upload action:
Encoding::UndefinedConversionError in MainController#upload
"\xC4" from ASCII-8BIT to UTF-8

The action looks like this:
  def upload
    @uploaded_io = params[:upload]
    File.open(Rails.root.join(''public'',
''images'',
@uploaded_io.original_filename), ''w'') do |file|
      file.write(@uploaded_io.read)
    end
  end

I changed File.open to ''wb'' (binary) and it woked fine. I also
tried
switching the ruby version to 1.8.7 while leaving the File.open method
as ''w'' (write) which also worked as expected, without any
errors.
Should I use ''wb'' everytime I want to use files from the
filesystem,
or is it the ruby-1.9.2-p0 that comes with RVM cases the issue?

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Hey thanks!.. this solved my problem.

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