Please Can anyone tell me what this means?
04.12.12 18:55:19,334 com.apple.dock.extra[218]: [Warning] 1 IMFoundation 0x00007fff8e658be2 IMLogBacktraceToDepth + 69
04.12.12 18:55:19,334 com.apple.dock.extra[218]: [Warning] 2 IMCore 0x00007fff8762b281 IMPersonStatusComparator + 213984
04.12.12 18:55:19,334 com.apple.dock.extra[218]: [Warning] 3 IMCore 0x00007fff87646ecc IMFilterSiblingsForCapability + 24989
04.12.12 18:55:19,335 com.apple.dock.extra[218]: [Warning] 4 CoreFoundation 0x00007fff8ccf563c __invoking___ + 140
04.12.12 18:55:19,335 com.apple.dock.extra[218]: [Warning] 5 CoreFoundation 0x00007fff8ccf54d7 -[NSInvocation invoke] + 263
04.12.12 18:55:19,335 com.apple.dock.extra[218]: [Warning] 6 CoreFoundation 0x00007fff8ccf56a9 -[NSInvocation invokeWithTarget:] + 57
04.12.12 18:55:19,335 com.apple.dock.extra[218]: [Warning] 7 IMCore 0x00007fff8760bd7b IMPersonStatusComparator + 85722
04.12.12 18:55:19,335 com.apple.dock.extra[218]: [Warning] 8 CoreFoundation 0x00007fff8ccf0737 ___forwarding___ + 775
04.12.12 18:55:19,335 com.apple.dock.extra[218]: [Warning] 9 CoreFoundation 0x00007fff8ccf03b8 _CF_forwarding_prep_0 + 232
04.12.12 18:55:19,335 com.apple.dock.extra[218]: [Warning] 10 CoreFoundation 0x00007fff8ccf563c __invoking___ + 140
04.12.12 18:55:19,335 com.apple.dock.extra[218]: [Warning] 11 CoreFoundation 0x00007fff8ccf54d7 -[NSInvocation invoke] + 263
04.12.12 18:55:19,335 com.apple.dock.extra[218]: [Warning] 12 CoreFoundation 0x00007fff8ccf56a9 -[NSInvocation invokeWithTarget:] + 57
04.12.12 18:55:19,335 com.apple.dock.extra[218]: [Warning] 13 IMFoundation 0x00007fff8e6555d5 im_local_object_peer_event_handler + 7128
04.12.12 18:55:19,336 com.apple.dock.extra[218]: [Warning] 14 IMFoundation 0x00007fff8e6556b3 im_local_object_peer_event_handler + 7350
04.12.12 18:55:19,336 com.apple.dock.extra[218]: [Warning] 15 IMFoundation 0x00007fff8e655767 im_local_object_peer_event_handler + 7530
04.12.12 18:55:19,336 com.apple.dock.extra[218]: [Warning] 16 Foundation 0x00007fff8db80677 __NSThreadPerformPerform + 225
04.12.12 18:55:19,336 com.apple.dock.extra[218]: [Warning] 17 CoreFoundation 0x00007fff8cc81101 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
04.12.12 18:55:19,336 com.apple.dock.extra[218]: [Warning] 18 CoreFoundation 0x00007fff8cc80aed __CFRunLoopDoSources0 + 445
04.12.12 18:55:19,336 com.apple.dock.extra[218]: [Warning] 19 CoreFoundation 0x00007fff8cca3dc5 __CFRunLoopRun + 789
04.12.12 18:55:19,336 com.apple.dock.extra[218]: [Warning] 20 CoreFoundation 0x00007fff8cca36b2 CFRunLoopRunSpecific + 290
04.12.12 18:55:19,336 com.apple.dock.extra[218]: [Warning] 21 HIToolbox 0x00007fff8f5600a4 RunCurrentEventLoopInMode + 209
04.12.12 18:55:19,336 com.apple.dock.extra[218]: [Warning] 22 HIToolbox 0x00007fff8f55fe42 ReceiveNextEventCommon + 356
04.12.12 18:55:19,337 com.apple.dock.extra[218]: [Warning] 23 HIToolbox 0x00007fff8f55fcd3 BlockUntilNextEventMatchingListInMode + 62
04.12.12 18:55:19,337 com.apple.dock.extra[218]: [Warning] 24 AppKit 0x00007fff92211613 _DPSNextEvent + 685
04.12.12 18:55:19,337 com.apple.dock.extra[218]: [Warning] 25 AppKit 0x00007fff92210ed2 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 128
04.12.12 18:55:19,337 com.apple.dock.extra[218]: [Warning] 26 AppKit 0x00007fff92208283 -[NSApplication run] + 517
04.12.12 18:55:19,337 com.apple.dock.extra[218]: [Warning] 27 AppKit 0x00007fff921accb6 NSApplicationMain + 869
04.12.12 18:55:19,337 com.apple.dock.extra[218]: [Warning] 28 XPCService 0x00007fff86e82d15 xpc_service_main + 433
04.12.12 18:55:19,337 com.apple.dock.extra[218]: [Warning] 29 com.apple.dock.extra 0x000000010508b744 com.apple.dock.extra + 5956
04.12.12 18:55:19,337 com.apple.dock.extra[218]: [Warning] Exception: *** -[__NSPlaceholderDictionary initWithObjects:forKeys:count:]: attempt to insert nil object from objects[2]
04.12.12 18:55:19,338 com.apple.dock.extra[218]: [Warning] Symbols: (
0 CoreFoundation 0x00007fff8cd020a6 __exceptionPreprocess + 198
1 libobjc.A.dylib 0x00007fff8a1653f0 objc_exception_throw + 43
2 CoreFoundation 0x00007fff8ccc6777 -[__NSPlaceholderDictionary initWithObjects:forKeys:count:] + 119
3 CoreFoundation 0x00007fff8ccf3f99 +[NSDictionary dictionaryWithObjects:forKeys:count:] + 57
4 iChatDockTile 0x0000000107cd44da iChatDockTile + 38106
5 iChatDockTile 0x0000000107cd4a2a iChatDockTile + 39466
6 CoreFoundation 0x00007fff8ccb447a _CFXNotificationPost + 2554
7 Foundation 0x00007fff8db36846 -[NSNotificationCenter postNotificationNamebject:userInfo:] + 64
8 IMFoundation 0x00007fff8e6616ee IMCleanupPhoneNumber + 1099
9 IMFoundation 0x00007fff8e661691 IMCleanupPhoneNumber + 1006
10 IMCore 0x00007fff8762b196 IMPersonStatusComparator + 213749
11 IMCore 0x00007fff87646ecc IMFilterSiblingsForCapability + 24989
12 CoreFoundation 0x00007fff8ccf563c __invoking___ + 140
13 CoreFoundation 0x00007fff8ccf54d7 -[NSInvocation invoke] + 263
14 CoreFoundation 0x00007fff8ccf56a9 -[NSInvocation invokeWithTarget:] + 57
15 IMCore 0x00007fff8760bd7b IMPersonStatusComparator + 85722
16 CoreFoundation 0x00007fff8ccf0737 ___forwarding___ + 775
17 CoreFoundation 0x00007fff8ccf03b8 _CF_forwarding_prep_0 + 232
18 CoreFoundation 0x00007fff8ccf563c __invoking___ + 140
19 CoreFoundation 0x00007fff8ccf54d7 -[NSInvocation invoke] + 263
20 CoreFoundation 0x00007fff8ccf56a9 -[NSInvocation invokeWithTarget:] + 57
21 IMFoundation 0x00007fff8e6555d5 im_local_object_peer_event_handler + 7128
22 IMFoundation 0x00007fff8e6556b3 im_local_object_peer_event_handler + 7350
23 IMFoundation 0x00007fff8e655767 im_local_object_peer_event_handler + 7530
24 Foundation 0x00007fff8db80677 __NSThreadPerformPerform + 225
25 CoreFoundation 0x00007fff8cc81101 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
26 CoreFoundation 0x00007fff8cc80aed __CFRunLoopDoSources0 + 445
27 CoreFoundation 0x00007fff8cca3dc5 __CFRunLoopRun + 789
28 CoreFoundation 0x00007fff8cca36b2 CFRunLoopRunSpecific + 290
29 HIToolbox 0x00007fff8f5600a4 RunCurrentEventLoopInMode + 209
30 HIToolbox 0x00007fff8f55fe42 ReceiveNextEventCommon + 356
31 HIToolbox 0x00007fff8f55fcd3 BlockUntilNextEventMatchingListInMode + 62
32 AppKit 0x00007fff92211613 _DPSNextEvent + 685
33 AppKit 0x00007fff92210ed2 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 128
34 AppKit 0x00007fff92208283 -[NSApplication run] + 517
35 AppKit 0x00007fff921accb6 NSApplicationMain + 869
36 XPCService 0x00007fff86e82d15 xpc_service_main + 433
37 com.apple.dock.extra 0x000000010508b744 com.apple.dock.extra + 5956
)
04.12.12 18:55:19,339 com.apple.dock.extra[218]: [Warning] Caught exception: *** -[__NSPlaceholderDictionary initWithObjects:forKeys:count:]: attempt to insert nil object from objects[2] name: NSInvalidArgumentException reason: *** -[__NSPlaceholderDictionary initWithObjects:forKeys:count:]: attempt to insert nil object from objects[2] userInfo: (null) in function: -[IMChat _postNotification:userInfo:]
04.12.12 18:55:19,340 com.apple.dock.extra[218]: [Warning] 1 IMFoundation 0x00007fff8e658be2 IMLogBacktraceToDepth + 69
04.12.12 18:55:19,340 com.apple.dock.extra[218]: [Warning] 2 IMCore 0x00007fff8762b281 IMPersonStatusComparator + 213984
04.12.12 18:55:19,340 com.apple.dock.extra[218]: [Warning] 3 IMCore 0x00007fff87646ecc IMFilterSiblingsForCapability + 24989
04.12.12 18:55:19,340 com.apple.dock.extra[218]: [Warning] 4 CoreFoundation 0x00007fff8ccf563c __invoking___ + 140
04.12.12 18:55:19,334 com.apple.dock.extra[218]: [Warning] 1 IMFoundation 0x00007fff8e658be2 IMLogBacktraceToDepth + 69
04.12.12 18:55:19,334 com.apple.dock.extra[218]: [Warning] 2 IMCore 0x00007fff8762b281 IMPersonStatusComparator + 213984
04.12.12 18:55:19,334 com.apple.dock.extra[218]: [Warning] 3 IMCore 0x00007fff87646ecc IMFilterSiblingsForCapability + 24989
04.12.12 18:55:19,335 com.apple.dock.extra[218]: [Warning] 4 CoreFoundation 0x00007fff8ccf563c __invoking___ + 140
04.12.12 18:55:19,335 com.apple.dock.extra[218]: [Warning] 5 CoreFoundation 0x00007fff8ccf54d7 -[NSInvocation invoke] + 263
04.12.12 18:55:19,335 com.apple.dock.extra[218]: [Warning] 6 CoreFoundation 0x00007fff8ccf56a9 -[NSInvocation invokeWithTarget:] + 57
04.12.12 18:55:19,335 com.apple.dock.extra[218]: [Warning] 7 IMCore 0x00007fff8760bd7b IMPersonStatusComparator + 85722
04.12.12 18:55:19,335 com.apple.dock.extra[218]: [Warning] 8 CoreFoundation 0x00007fff8ccf0737 ___forwarding___ + 775
04.12.12 18:55:19,335 com.apple.dock.extra[218]: [Warning] 9 CoreFoundation 0x00007fff8ccf03b8 _CF_forwarding_prep_0 + 232
04.12.12 18:55:19,335 com.apple.dock.extra[218]: [Warning] 10 CoreFoundation 0x00007fff8ccf563c __invoking___ + 140
04.12.12 18:55:19,335 com.apple.dock.extra[218]: [Warning] 11 CoreFoundation 0x00007fff8ccf54d7 -[NSInvocation invoke] + 263
04.12.12 18:55:19,335 com.apple.dock.extra[218]: [Warning] 12 CoreFoundation 0x00007fff8ccf56a9 -[NSInvocation invokeWithTarget:] + 57
04.12.12 18:55:19,335 com.apple.dock.extra[218]: [Warning] 13 IMFoundation 0x00007fff8e6555d5 im_local_object_peer_event_handler + 7128
04.12.12 18:55:19,336 com.apple.dock.extra[218]: [Warning] 14 IMFoundation 0x00007fff8e6556b3 im_local_object_peer_event_handler + 7350
04.12.12 18:55:19,336 com.apple.dock.extra[218]: [Warning] 15 IMFoundation 0x00007fff8e655767 im_local_object_peer_event_handler + 7530
04.12.12 18:55:19,336 com.apple.dock.extra[218]: [Warning] 16 Foundation 0x00007fff8db80677 __NSThreadPerformPerform + 225
04.12.12 18:55:19,336 com.apple.dock.extra[218]: [Warning] 17 CoreFoundation 0x00007fff8cc81101 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
04.12.12 18:55:19,336 com.apple.dock.extra[218]: [Warning] 18 CoreFoundation 0x00007fff8cc80aed __CFRunLoopDoSources0 + 445
04.12.12 18:55:19,336 com.apple.dock.extra[218]: [Warning] 19 CoreFoundation 0x00007fff8cca3dc5 __CFRunLoopRun + 789
04.12.12 18:55:19,336 com.apple.dock.extra[218]: [Warning] 20 CoreFoundation 0x00007fff8cca36b2 CFRunLoopRunSpecific + 290
04.12.12 18:55:19,336 com.apple.dock.extra[218]: [Warning] 21 HIToolbox 0x00007fff8f5600a4 RunCurrentEventLoopInMode + 209
04.12.12 18:55:19,336 com.apple.dock.extra[218]: [Warning] 22 HIToolbox 0x00007fff8f55fe42 ReceiveNextEventCommon + 356
04.12.12 18:55:19,337 com.apple.dock.extra[218]: [Warning] 23 HIToolbox 0x00007fff8f55fcd3 BlockUntilNextEventMatchingListInMode + 62
04.12.12 18:55:19,337 com.apple.dock.extra[218]: [Warning] 24 AppKit 0x00007fff92211613 _DPSNextEvent + 685
04.12.12 18:55:19,337 com.apple.dock.extra[218]: [Warning] 25 AppKit 0x00007fff92210ed2 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 128
04.12.12 18:55:19,337 com.apple.dock.extra[218]: [Warning] 26 AppKit 0x00007fff92208283 -[NSApplication run] + 517
04.12.12 18:55:19,337 com.apple.dock.extra[218]: [Warning] 27 AppKit 0x00007fff921accb6 NSApplicationMain + 869
04.12.12 18:55:19,337 com.apple.dock.extra[218]: [Warning] 28 XPCService 0x00007fff86e82d15 xpc_service_main + 433
04.12.12 18:55:19,337 com.apple.dock.extra[218]: [Warning] 29 com.apple.dock.extra 0x000000010508b744 com.apple.dock.extra + 5956
04.12.12 18:55:19,337 com.apple.dock.extra[218]: [Warning] Exception: *** -[__NSPlaceholderDictionary initWithObjects:forKeys:count:]: attempt to insert nil object from objects[2]
04.12.12 18:55:19,338 com.apple.dock.extra[218]: [Warning] Symbols: (
0 CoreFoundation 0x00007fff8cd020a6 __exceptionPreprocess + 198
1 libobjc.A.dylib 0x00007fff8a1653f0 objc_exception_throw + 43
2 CoreFoundation 0x00007fff8ccc6777 -[__NSPlaceholderDictionary initWithObjects:forKeys:count:] + 119
3 CoreFoundation 0x00007fff8ccf3f99 +[NSDictionary dictionaryWithObjects:forKeys:count:] + 57
4 iChatDockTile 0x0000000107cd44da iChatDockTile + 38106
5 iChatDockTile 0x0000000107cd4a2a iChatDockTile + 39466
6 CoreFoundation 0x00007fff8ccb447a _CFXNotificationPost + 2554
7 Foundation 0x00007fff8db36846 -[NSNotificationCenter postNotificationNamebject:userInfo:] + 64
8 IMFoundation 0x00007fff8e6616ee IMCleanupPhoneNumber + 1099
9 IMFoundation 0x00007fff8e661691 IMCleanupPhoneNumber + 1006
10 IMCore 0x00007fff8762b196 IMPersonStatusComparator + 213749
11 IMCore 0x00007fff87646ecc IMFilterSiblingsForCapability + 24989
12 CoreFoundation 0x00007fff8ccf563c __invoking___ + 140
13 CoreFoundation 0x00007fff8ccf54d7 -[NSInvocation invoke] + 263
14 CoreFoundation 0x00007fff8ccf56a9 -[NSInvocation invokeWithTarget:] + 57
15 IMCore 0x00007fff8760bd7b IMPersonStatusComparator + 85722
16 CoreFoundation 0x00007fff8ccf0737 ___forwarding___ + 775
17 CoreFoundation 0x00007fff8ccf03b8 _CF_forwarding_prep_0 + 232
18 CoreFoundation 0x00007fff8ccf563c __invoking___ + 140
19 CoreFoundation 0x00007fff8ccf54d7 -[NSInvocation invoke] + 263
20 CoreFoundation 0x00007fff8ccf56a9 -[NSInvocation invokeWithTarget:] + 57
21 IMFoundation 0x00007fff8e6555d5 im_local_object_peer_event_handler + 7128
22 IMFoundation 0x00007fff8e6556b3 im_local_object_peer_event_handler + 7350
23 IMFoundation 0x00007fff8e655767 im_local_object_peer_event_handler + 7530
24 Foundation 0x00007fff8db80677 __NSThreadPerformPerform + 225
25 CoreFoundation 0x00007fff8cc81101 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
26 CoreFoundation 0x00007fff8cc80aed __CFRunLoopDoSources0 + 445
27 CoreFoundation 0x00007fff8cca3dc5 __CFRunLoopRun + 789
28 CoreFoundation 0x00007fff8cca36b2 CFRunLoopRunSpecific + 290
29 HIToolbox 0x00007fff8f5600a4 RunCurrentEventLoopInMode + 209
30 HIToolbox 0x00007fff8f55fe42 ReceiveNextEventCommon + 356
31 HIToolbox 0x00007fff8f55fcd3 BlockUntilNextEventMatchingListInMode + 62
32 AppKit 0x00007fff92211613 _DPSNextEvent + 685
33 AppKit 0x00007fff92210ed2 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 128
34 AppKit 0x00007fff92208283 -[NSApplication run] + 517
35 AppKit 0x00007fff921accb6 NSApplicationMain + 869
36 XPCService 0x00007fff86e82d15 xpc_service_main + 433
37 com.apple.dock.extra 0x000000010508b744 com.apple.dock.extra + 5956
)
04.12.12 18:55:19,339 com.apple.dock.extra[218]: [Warning] Caught exception: *** -[__NSPlaceholderDictionary initWithObjects:forKeys:count:]: attempt to insert nil object from objects[2] name: NSInvalidArgumentException reason: *** -[__NSPlaceholderDictionary initWithObjects:forKeys:count:]: attempt to insert nil object from objects[2] userInfo: (null) in function: -[IMChat _postNotification:userInfo:]
04.12.12 18:55:19,340 com.apple.dock.extra[218]: [Warning] 1 IMFoundation 0x00007fff8e658be2 IMLogBacktraceToDepth + 69
04.12.12 18:55:19,340 com.apple.dock.extra[218]: [Warning] 2 IMCore 0x00007fff8762b281 IMPersonStatusComparator + 213984
04.12.12 18:55:19,340 com.apple.dock.extra[218]: [Warning] 3 IMCore 0x00007fff87646ecc IMFilterSiblingsForCapability + 24989
04.12.12 18:55:19,340 com.apple.dock.extra[218]: [Warning] 4 CoreFoundation 0x00007fff8ccf563c __invoking___ + 140