PaperClip StorageMethodNotFound (Cannot found filesystem)

Hello ,            i have an issue with paperclip . when i a working on windows its works fine when i Go on Fedora Or heroku It gives Error PaperClip StorageMethodNotFound (Cannot found filesystem) :        .....................       .....................         .....................         .....................

is this works for me

http://github.com/tomafro/paperclip/commit/64ae23ba01885e22cc69bf1264f339784ce32fc9

Please Help......

Thanks in advance.