Aws S3object exists? method

Hi All

through S3Obejct , I am trying to check whether file is exists or not on
Amazone.

When I try to check with .mp3 file , it always return true even if it is
not exists there.

AWS::S3::S3Object.exists?(“files/barebear.mp3”,"")
=> true

AWS::S3::S3Object.find(“files/barebear.mp3”,"")
AWS::S3::NoSuchKey: No such key recordings/barebear.mp3' from /usr/lib/ruby/gems/1.8/gems/aws-s3-0.6.2/lib/aws/s3/object.rb:177:infind’
from (irb):16

In other files it return me proper result.

Gem Version:
aws-s3 (0.6.2, 0.5.1)

Can anyone help me what is the issue.

Thanks
Brijesh S.