See full [question in Stackoverflow](http://stackoverflow.com/questions/17602845/post-error-either-binaryread-form-files-or-inputstream-was-accessed-before-t)
After performing the downgrade webapi, it worked! But now without support for $expand and $select.
It seems that [this commit](https://aspnetwebstack.codeplex.com/SourceControl/changeset/0678d3e314c08403e1c9584cd08846b045ad5f5f) generated this error. (Thanks [JimmiTh](http://chat.stackoverflow.com/users/1169696/jimmith) and [Kiran Challa](http://chat.stackoverflow.com/users/1184056/kiran-challa))
After performing the downgrade webapi, it worked! But now without support for $expand and $select.
It seems that [this commit](https://aspnetwebstack.codeplex.com/SourceControl/changeset/0678d3e314c08403e1c9584cd08846b045ad5f5f) generated this error. (Thanks [JimmiTh](http://chat.stackoverflow.com/users/1169696/jimmith) and [Kiran Challa](http://chat.stackoverflow.com/users/1184056/kiran-challa))