MYNetwork-iPhone errors on first message received

As soon as a message is sent from a client, the iphone server (using the most recent source available) errors upon receipt. The assertion _isMutable fails on line 238. I can provide any additional information if needed.

2011-01-23 00:58:52.122 BLIPEcho[1199:307] Assertion failure in -[BLIPResponse setError:], /Users/cmutter/Code/mynetwork/BLIP/BLIPRequest.m:238
00:58:52.159| aWARNING : Exception caught in Dispatching BLIP request:

_isMine && _isMutable

0x319a149d <- 0x314d07c9 <- 0x31d1629f <- 0xcdfd <- 0x8e3f <- 0x8a99 <- 0x9413 <- 0x709d <- 0xac5f <- 0xa739 <- 0xa95d <- 0x6015 <- 0x314b2415 <- 0x31490f71 <- 0x31491849
2011-01-23 00:59:07.630 BLIPEcho[1199:307] Assertion failure in -[BLIPResponse setError:], /Users/cmutter/Code/mynetwork/BLIP/BLIPRequest.m:238
2011-01-23 00:59:07.777 BLIPEcho[1199:307] Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'isMine && isMutable'
*** Call stack at first throw: (

0   CoreFoundation                      0x314d0987 __exceptionPreprocess + 114
1   libobjc.A.dylib                     0x319a149d objc_exception_throw + 24
2   CoreFoundation                      0x314d07c9 +[NSException raise:format:arguments:] + 68
3   Foundation                          0x31d1629f -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 62
4   BLIPEcho                            0x0000cdfd _AssertFailed + 180
5   BLIPEcho                            0x00008e3f -[BLIPResponse setError:] + 54
6   BLIPEcho                            0x00008a99 -[BLIPRequest respondWithError:] + 32
7   BLIPEcho                            0x000093dd -[BLIPRequest respondWithException:] + 48
8   BLIPEcho                            0x000070c5 -[BLIPConnection _dispatchRequest:] + 468
9   BLIPEcho                            0x0000ac5f -[BLIPReader _receivedFrameWithHeader:body:] + 574
10  BLIPEcho                            0x0000a739 -[BLIPReader _endCurFrame] + 44
11  BLIPEcho                            0x0000a95d -[BLIPReader _canRead] + 440
12  BLIPEcho                            0x00006015 -[TCPStream stream:handleEvent:] + 180
13  CoreFoundation                      0x314b2415 _inputStreamCallbackFunc + 52
14  CoreFoundation                      0x31490f71 _signalEventSync + 76
15  CoreFoundation                      0x31491849 _cfstream_solo_signalEventSync + 64
16  CoreFoundation                      0x3148e7f5 _CFStreamSignalEvent + 332
17  CoreFoundation                      0x3148e6a7 CFReadStreamSignalEvent + 10
18  CFNetwork                           0x346c5cb7 _ZN12SocketStream40dispatchSignalFromSocketCallbackUnlockedEP24SocketStreamSignalHolder + 26
19  CFNetwork                           0x34653423 _ZN12SocketStream14socketCallbackEP10__CFSocketmPK8__CFDataPKv + 110
20  CFNetwork                           0x346533a5 _ZN12SocketStream22_SocketCallBack_streamEP10__CFSocketmPK8__CFDataPKvPv + 48
21  CoreFoundation                      0x31490c9d __CFSocketDoCallback + 340
22  CoreFoundation                      0x314909b1 __CFSocketPerformV0 + 84
23  CoreFoundation                      0x314867dd __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 12
24  CoreFoundation                      0x314585b7 __CFRunLoopDoSources0 + 382
25  CoreFoundation                      0x31457e5b __CFRunLoopRun + 230
26  CoreFoundation                      0x31457c87 CFRunLoopRunSpecific + 230
27  CoreFoundation                      0x31457b8f CFRunLoopRunInMode + 58
28  GraphicsServices                    0x35d664ab GSEventRunModal + 114
29  GraphicsServices                    0x35d66557 GSEventRun + 62
30  UIKit                               0x338d5329 -[UIApplication _run] + 412
31  UIKit                               0x338d2e93 UIApplicationMain + 670
32  BLIPEcho                            0x00002545 main + 48
33  BLIPEcho                            0x00002510 start + 40

) terminate called after throwing an instance of 'NSException'