Get the following error. Need help interpreting it:

I did check that the spelling of the selector is the same as the function name.

2011-06-23 10:54:19.027 Tasks[3903:207] -[EditDateController saveButtonPressed]: unrecognized selector sent to instance 0x4d5e3b0
2011-06-23 10:54:19.029 Tasks[3903:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[EditDateController saveButtonPressed]: unrecognized selector sent to instance 0x4d5e3b0'
*** Call stack at first throw:
(
0 CoreFoundation 0x00fac5a9 __exceptionPreprocess + 185
1 libobjc.A.dylib 0x01100313 objc_exception_throw + 44
2 CoreFoundation 0x00fae0bb -[NSObject(NSObject) doesNotRecognizeSelector:] + 187
3 CoreFoundation 0x00f1d966 ___forwarding___ + 966
4 CoreFoundation 0x00f1d522 _CF_forwarding_prep_0 + 50
5 UIKit 0x002c54fd -[UIApplication sendAction:to:from:forEvent:] + 119
6 UIKit 0x004d7cc3 -[UIBarButtonItem(UIInternal) _sendAction:withEvent:] + 156
7 UIKit 0x002c54fd -[UIApplication sendAction:to:from:forEvent:] + 119
8 UIKit 0x00355799 -[UIControl sendAction:to:forEvent:] + 67
9 UIKit 0x00357c2b -[UIControl(Internal) _sendActionsForEvents:withEvent:] + 527
10 UIKit 0x003567d8 -[UIControl touchesEnded:withEvent:] + 458
11 UIKit 0x002e9ded -[UIWindow _sendTouchesForEvent:] + 567
12 UIKit 0x002cac37 -[UIApplication sendEvent:] + 447
13 UIKit 0x002cff2e _UIApplicationHandleEvent + 7576
14 GraphicsServices 0x01904992 PurpleEventCallback + 1550
15 CoreFoundation 0x00f8d944 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FU NCTION__ + 52
16 CoreFoundation 0x00eedcf7 __CFRunLoopDoSource1 + 215
17 CoreFoundation 0x00eeaf83 __CFRunLoopRun + 979
18 CoreFoundation 0x00eea840 CFRunLoopRunSpecific + 208
19 CoreFoundation 0x00eea761 CFRunLoopRunInMode + 97
20 GraphicsServices 0x019031c4 GSEventRunModal + 217
21 GraphicsServices 0x01903289 GSEventRun + 115
22 UIKit 0x002d3c93 UIApplicationMain + 1160
23 Tasks 0x000020e0 main + 102
24 Tasks 0x00002071 start + 53
25 ??? 0x00000001 0x0 + 1
)