The signature needs to be the very last parameter. You put all of the parameters in order except for the signature. Then you create the signature and append it to the end of the query string.
Ryan Sent from my DROID On Jan 16, 2010 9:48 PM, "eco_bach" <bac...@gmail.com> wrote: Ok Yes this IS a common error message. I've read most of the posts, the entire OAuth beginner's documentation, registered my application, checked for capitalization , checked my system clock. So far, no luck As a base library I am using Sönke Rohde's open source Twitter library http://github.com/srohde/Twitter, though might switch to Tweetr and see if I make better progress. This is my header GET /oauth/request_token? oauth_consumer_key=C4eEz9MqGy28wuCj8hJC4w&oauth_nonce=0020a00%2001&oauth_signature=gX9Uk20RF70D6sxljfvcIK4szr4%3D&oauth_signature_method=HMAC- SHA1&oauth_timestamp=1263675366 HTTP/1.1 Also , I am testing from the desktop at the moment so needing a proxy for security sandbox issues isn't a problem. Can anyone help with troubleshooting?