Mailchimp and Chimpkit - Exception thrown when I try to sign up

[Dinalli]

I have been asked to integrate mailchimp into my app for the newsletter sign up.

I found this which looked just like what i needed to use.

mailchimp's ChimpKit at master - GitHub

I have followed the steps to integrate this into my app.
However I must be missing something here as I keep getting this error when i have submitted the email address.

Any ideas ?

2010-09-12 17:05:22.956 Maverix[9314:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[Contact signupDidFail:]: unrecognized selector sent to instance 0x734aee0'
*** Call stack at first throw:
(
0 CoreFoundation 0x02c80b99 __exceptionPreprocess + 185
1 libobjc.A.dylib 0x02dd040e objc_exception_throw + 47
2 CoreFoundation 0x02c826ab -[NSObject(NSObject) doesNotRecognizeSelector:] + 187
3 CoreFoundation 0x02bf22b6 ___forwarding___ + 966
4 CoreFoundation 0x02bf1e72 _CF_forwarding_prep_0 + 50
5 Maverix 0x0000eb83 -[TeePee tp_requestDidLoad:] + 140
6 Foundation 0x000a03ca __NSThreadPerformPerform + 251
7 CoreFoundation 0x02c61faf __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FU NCTION__ + 15
8 CoreFoundation 0x02bc039b __CFRunLoopDoSources0 + 571
9 CoreFoundation 0x02bbf896 __CFRunLoopRun + 470
10 CoreFoundation 0x02bbf350 CFRunLoopRunSpecific + 208
11 CoreFoundation 0x02bbf271 CFRunLoopRunInMode + 97
12 GraphicsServices 0x0333400c GSEventRunModal + 217
13 GraphicsServices 0x033340d1 GSEventRun + 115
14 UIKit 0x0032faf2 UIApplicationMain + 1160
15 Maverix 0x00002914 main + 102
16 Maverix 0x000028a5 start + 53
)
terminate called after throwing an instance of 'NSException'