Log showing the issue is caused by a reimport:
https://udn.unrealengine.com/questions/331317/recurring-editor-crash.html
This Jira was created from CrashReports submitted by the public due to the high number of occurrences.
Error message:
Assertion failed: Reference != 0 [Link Removed] [Line: 73]
Source Context:
59 Reset(InReference); 60 return *this; 61 } 62 63 // Dereferencing operators. 64 ReferencedType& operator*() const 65 { 66 check(Reference != 0); 67 return *Reference; 68 } 69 70 ReferencedType* operator->() const 71 { 72 check(Reference != 0); 73 ***** return Reference; 74 } 75 76 ReferencedType* GetOwnedPointer() const 77 { 78 return Reference; 79 } 80 81 /** Returns true if the pointer is valid */ 82 bool IsValid() const 83 { 84 return ( Reference != 0 ); 85 } 86 87 // implicit conversion to the reference type. 88 operator ReferencedType*() const
Most recent user affected CL: 2992821
Logs:
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Repro steps unknown
UE4Editor_Engine!TScopedPointer<FStaticMeshRenderData>::operator->() [scopedpointer.h:74] UE4Editor_Engine!FDistanceFieldAsyncQueue::Build() [distancefieldatlas.cpp:489] UE4Editor_Engine!FBuildDistanceFieldThreadRunnable::Run() [distancefieldatlas.cpp:382] UE4Editor_Core!FRunnableThreadWin::Run() [windowsrunnablethread.cpp:74]
i have this problem UE4CC-Windows-58DC12AF4B97F057BD108FBFF569B2E9_0000
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There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-31685 in the post.