Hi Derlan,
This is often caused by the image not being sent the correct way. Image
uploading with OAuth is a little different as the request contains
multi-part data. I've produced an example of how to do image posting with
OAuth on github:
https://github.com/themattharris/tmhOAuth/blob/master/ex
I have a problem with update_profile_background_image, sending the
image parameter correctly and get the error "500 Internal Server
Error", it can be?
--
Twitter developer documentation and resources: http://dev.twitter.com/doc
API updates via Twitter: http://twitter.com/twitterapi
Issues/Enhance