-[__NSDictionaryM JSONString]: unrecognized selector sent to instance 0x7fd6c4d0ab30

2016-01-21 10:33:13.744 BV[13165:13078871] 10:33:13.743 WARNING:  >aq> 987: Input ring buffer returning 0x400 frames of silence (trying to read: 138000 - 140000; current bounds 159182 - 175182) (0 previous warnings suppressed)

2016-01-21 10:33:13.746 BV[13165:13075129] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSDictionaryM JSONString]: unrecognized selector sent to instance 0x7fd6c4d0ab30'

*** First throw call stack:

(

0   CoreFoundation                      0x0000000110238e65 __exceptionPreprocess + 165

1   libobjc.A.dylib                     0x000000010fc0adeb objc_exception_throw + 48

2   CoreFoundation                      0x000000011024148d -[NSObject(NSObject) doesNotRecognizeSelector:] + 205

3   CoreFoundation                      0x000000011018e90a ___forwarding___ + 970

4   CoreFoundation                      0x000000011018e4b8 _CF_forwarding_prep_0 + 120

5   BV                                  0x000000010ca8684e -[BDVRDataComposition compoiseAudioPostData:] + 3854

6   BV                                  0x000000010ca9f27b -[BDVRClientImp MFEWithInputModeProcessNewDataCallback:] + 5067

7   Foundation                          0x000000010db13067 __NSThreadPerformPerform + 283

8   CoreFoundation                      0x0000000110164a31 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17

9   CoreFoundation                      0x000000011015a95c __CFRunLoopDoSources0 + 556

10  CoreFoundation                      0x0000000110159e13 __CFRunLoopRun + 867

11  CoreFoundation                      0x0000000110159828 CFRunLoopRunSpecific + 488

12  GraphicsServices                    0x000000011126fad2 GSEventRunModal + 161

13  UIKit                               0x000000010df4b610 UIApplicationMain + 171

14  BV                                  0x000000010ca7d56f main + 111

15  libdyld.dylib                       0x0000000110c6592d start + 1

16  ???                                 0x0000000000000001 0x0 + 1

)

libc++abi.dylib: terminating with uncaught exception of type NSException