Hi,

I am trying to download an attachment with the Yahoo Mail API.  I have successfully authenticated and used the JSON RPC for ListFolders, ListMessages, etc.

Therefore, I believe I have the correct OAuth parameters in the header of the HttpRequest.  I'm currently using Python to communicate with the Yahoo endpoints.

Here are the example parameters for my GET request to download the attachment:

URL: 
http://mail.yahooapis.com/ya/download?fid=%2540B%2540Bulk&pid=2&mid=1_159_17440_AI7Si2IAANL2Tkrh9QzX33kKnuc&clean=0&appid=&inline=0&tnef=

OAuth Headers:
{'Authorization': u'OAuth realm="", oauth_body_hash="2jmj7l5rSw0yVb%2FvlWAYkK%2FYBwk%3D", oauth_nonce="08466025", oauth_timestamp="1315312043", oauth_signature_method="HMAC-SHA1", oauth_consumer_key="dj0yJmk9NVpHS00zbWREa0FoJmQ9WVdrOU9VcHZPVmhsTkdrbWNHbzlORGt6TVRJM01EWXkmcz1jb25zdW1lcnNlY3JldCZ4PThh", oauth_version="1.0", oauth_token="A%3D713VVn_b4g5F9D8IF3XFFvAzfcj0z2j31Nqji25Q0DLCgBWYHqpLr5a.TAi7KtMxTLxj_URJP1nu2oJXhTMp7tsLyJNoIgwRFt_csGnRNyteNXmzW6MUx3n_0ccMOtoRbgXtlC52cTGtLvCO1LlOXgbN1czxlxzLvt.9iEht9xD97AmS9pxIUl2tMi1qOUhpiesAwc3wVqyXAA51KrQ0ReactrHsutYuVja3CVEQry5y3c4DKRmydNh1bjkxUw200vUxpJOdtz9MRLExjet5KeKT82YveONB1.IIj7ywavVnFupsZuO2Tjml7YqR0vO_WSj7tYYh.b76T.KhG6xTWucvyBPCNGaS4GQxdXnLjz3b3HGO2MItWI8r_eET1D7g1kj2JV7xNn9K9fRUByWEJwX1WGGvOUL9wKgTm49o.g5yM5qdTOvUTU0qCfQ8gDLklAqO5ST9wbhbMIQHwH5IaDng5KPuGNdge9CaLYYNOz7xCBiQyfruk4vejkJSM5zjwgx5ABNgZVVsPN1w9KeO6UWpRryW8iz7pLsieSTYIlWcvgBKdhUpBwym.Y50tLOakRKva4EhhKQ5T_LF10E8xTdnpqIuzPbMFW9q1zrYXPtpjWqvQUgxaVKNAz.tTkmPQ367ZtssNh1OJ0LybBF3hc2v2gixZYwYKOwbh2QVRpq9iefLIFob1pkKhWjn4ECbp8aGmXVR2hQ6upx51EJw2ndyeJ4Jr_s9WjKYK1FE_g3Gczc-", oauth_signature="164SvcsTKossSWcDkV%2FKktDgEV4%3D"'}

Here is the full HTTPError response
HTTP Error 404: Not Found