KeyTooLongError after multiple S3 requests. Ruby 2.0 only

[Meekohi]

Works fine with ruby1.8.7 but fails with ruby2.0.0. All the jpegs downloads complete, then there is an error when downloading info.json.

ruby-2.0.0-p0/gems/aws-2.9.1/lib/awsbase/awsbase.rb:542:in 'block (2 levels) in request_info_impl': KeyTooLongError: Your key is too long (Aws::AwsError)

def download_file( source_path, s3_key )
  File.open(source_path,'w') {|f|
    @bucket.get(s3_key) do |chunk|
      f.write(chunk)
    end
  }
end

jpegs = @bucket.keys({:prefix => id+"/jpegs"})
jpegs.each do |key|
    download_file("tmp.jpg",key)
end

infojson = @bucket.keys({:prefix => id+"/info.json"})
download_file("info.json",infojson)

[Meekohi]

Still having this issue on a fresh install.
ruby 2.0.0p247 (2013-06-27 revision 41674) [universal.x86_64-darwin13]

[treeder]

Could you print all the keys and find out which one it's erroring on?

[Meekohi]

The error occurs on the final
download_file("info.json",infojson)

Seems like it might be a case of expanding html_entities over and over again?

REQUEST=mybucket.s3.amazonaws.com:80/%5B%23%3CAws%3A%3AS3%3A%3A... (don't want to show the whole thing since I think the API keys are in there)