This sounds like you need to set up a bridging header.
You can use the supplied bridging header bundled with the framework - you should be able to follow along with the quickstart guide which can be found here or included within your download.
Alternatively, if you add an empty objective-c class, Xcode will ask you if you want to create a bridging header. Then within the file, add import . Xcode will update the Bridging header build settings for you to point at this header.
I hope that helps,