RosyWriter iOS6 GM Seed crash

gistfile1.txt

[ERROR] FATAL UNHANDLED EXCEPTION: MonoTouch.Foundation.MonoTouchException: Objective-C exception thrown.  Name: NSInvalidArgumentException Reason: *** -[AVAssetWriter startSessionAtSourceTime:] invalid parameter not satisfying: ((Boolean)(((startTime).flags & (kCMTimeFlags_Valid | kCMTimeFlags_ImpliedValueFlagsMask)) == kCMTimeFlags_Valid))
  at MonoTouch.AVFoundation.AVAssetWriter.StartSessionAtSourceTime (CMTime startTime) [0x00000] in <filename unknown>:0 
  at RosyWriter.RosyWriterVideoProcessor.WriteSampleBuffer (MonoTouch.CoreMedia.CMSampleBuffer sampleBuffer, MonoTouch.Foundation.NSString mediaType) [0x00000] in <filename unknown>:0 
  at RosyWriter.RosyWriterVideoProcessor+VideoOutputDataDelegate+<DidOutputSampleBuffer>c__AnonStorey1.<>m__7 () [0x00000] in <filename unknown>:0 
  at MonoTouch.CoreFoundation.DispatchQueue.static_dispatcher_to_managed (IntPtr context) [0x00000] in <filename unknown>:0 
  at (wrapper native-to-managed) MonoTouch.CoreFoundation.DispatchQueue:static_dispatcher_to_managed (intptr)
Stacktrace:


Native stacktrace:

	0   RosyWriter                          0x00226a65 RosyWriter + 2251365
	1   RosyWriter                          0x00252fbd RosyWriter + 2432957
	2   libsystem_c.dylib                   0x393b6e93 _sigtramp + 42
	3   libsystem_c.dylib                   0x393ad123 pthread_kill + 58
	4   libsystem_c.dylib                   0x393e9973 abort + 94
	5   RosyWriter                          0x002020c3 RosyWriter + 2101443
	6   RosyWriter                          0x001ed7f1 RosyWriter + 2017265
	7   RosyWriter                          0x001ed85b RosyWriter + 2017371
	8   RosyWriter                          0x002267e3 RosyWriter + 2250723
	9   RosyWriter                          0x002268b1 RosyWriter + 2250929
	10  RosyWriter                          0x00252279 RosyWriter + 2429561
	11  RosyWriter                          0x001a1464 RosyWriter + 1705060
	12  RosyWriter                          0x0029bc68 RosyWriter + 2731112
	13  CoreFoundation                      0x355fc57f <redacted> + 614
	14  libobjc.A.dylib                     0x3390ca65 <redacted> + 128
	15  libc++abi.dylib                     0x3275607b <redacted> + 78
	16  libc++abi.dylib                     0x32756114 <redacted> + 19
	17  libc++abi.dylib                     0x32757513 __cxa_throw + 122
	18  libobjc.A.dylib                     0x3390c9bf objc_exception_throw + 94
	19  AVFoundation                        0x31a34c89 <redacted> + 0
	20  RosyWriter                          0x000508c0 RosyWriter + 325824
	21  RosyWriter                          0x00007db8 RosyWriter + 28088
	22  RosyWriter                          0x0000da04 RosyWriter + 51716
	23  RosyWriter                          0x0001bd30 RosyWriter + 109872
	24  RosyWriter                          0x000519ec RosyWriter + 330220
	25  libdispatch.dylib                   0x342f0ecf <redacted> + 142
	26  libdispatch.dylib                   0x342f0dc1 <redacted> + 40
	27  libdispatch.dylib                   0x342f191d <redacted> + 184
	28  libdispatch.dylib                   0x342f1ac1 <redacted> + 84
	29  libsystem_c.dylib                   0x39384a11 <redacted> + 360
	30  libsystem_c.dylib                   0x393848a4 start_wqthread + 8

=================================================================
Got a SIGABRT while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries 
used by your application.
========================================================