iOS crash report during app store submission.

Our app was rejected from store submission because of a crash that we can't replicate locally.

The last Exception Backtrace starts with

0 CoreFoundation 0x18185b164 __exceptionPreprocess + 124 (NSException.m:166)
1 libobjc.A.dylib 0x180aa4528 objc_exception_throw + 56 (objc-exception.mm:521)
2 CoreFoundation 0x18185a7f0 __NSFastEnumerationMutationHandler + 128 (NSEnumerator.m:133)
3 Foundation 0x182159d84 -[NSConcreteMapTable countByEnumeratingWithStatebjects:count:] + 76 (NSMapTable.m:1018)

Beyond that, I had to manually symbolicate the next few lines.

+[DisplayManager Instance] (in [PRODUCTNAME]) (DisplayManager.mm:394)
CreatePixelBufferForCVTextureCache(unsigned long, unsigned long) (in [PRODUCTNAME]) (CVTextureCache.mm:104)
GfxDeviceMetal::GetDepthStencil(GfxDeviceMetal:epthStencilKey const&) (in [PRODUCTNAME]) (GfxDeviceMetal.mm:500)
void (anonymous namespace):ecompressETC2Block<((anonymous namespace)::AlphaMode)1>(unsigned long long, unsigned char*, unsigned int, int, int) (in [PRODUCTNAME]) (ETC2Decompression.cpp:331)
GfxDeviceMetal:rawBuffersIndirect(GfxBuffer*, VertexStreamSource const*, int, VertexDeclaration*, ShaderChannelMask, GfxPrimitiveType, ComputeBufferID, unsigned int) (in [PRODUCTNAME]) (GfxDeviceMetal.mm:923)
void CubemapArray::Transfer<GenerateTypeTreeTransfer>(GenerateTypeTreeTransfer&) (in [PRODUCTNAME]) (CubemapArrayTexture.cpp:382)
CustomRenderTextureManager::~CustomRenderTextureManager() (in [PRODUCTNAME]) (CustomRenderTextureManager.cpp:35)
Transform::SetLocalTRS(Vector3f const&, Quaternionf const&, Vector3f const&) (in [PRODUCTNAME]) (TransformHierarchy.h:502)


Unity is version 5.6.3, any suggestions?

 

@earok3d Any update?

 

Sorry, I forgot all about the thread! I did another submission after a few random tweaks (pretty sure none of which would have addressed that issue) and it went through fine the second time.

So I'm at a loss to explain it!