Compile error with cocoa pod code in iOS 8 beta

Question

I'm developing in Xcode6 Beta 6 for iOS 8.

I am encountering an code error on an imported LastFM Cocoa Pod:

when I try to compile, but I can't seem to figure out what's causing the error. (Using all the code from the example)

I keep getting the following error in my AppDelegate.m file :

Property 'cacheDelegate' not found on object of type 'LastFm *'

I have however ensured to have the following code in my LastFm.h file :

 @interface LastFm : NSObject


 @property (unsafe_unretained, nonatomic) id <LastFmCache> cacheDelegate;

Any thought why it would claim I have not set the property in LastFM ? Not sure if this is an iOS 8 issue, or simply an error on my part?

Thanks for any suggestions.