If you have any questions or issues about third-party libraries such as Rackspace you should ask in the vendor's own community or contact them directly:
https://community.rackspace.com/developers/default
These forums are intended for Microsoft's products and technologies only so please don't ask any questions about third-party software here.
Thanks for your understanding.
Please remember to close your threads by marking helpful posts as answer and then start a new thread in an appropriate forum if you have a new question.