This Jira was created from CrashReports submitted by the public due to the high number of occurrences.
Error message:
Assertion failed: Pair != nullptr [Link Removed] [Line: 520]
Source Context:
4190 DependencyIndex = ExportToIndexMap.FindRef(DependentObject);
4191 }
4192 // otherwise we need to save an index into the ImportMap
4193 else
4194 {
4195 // ... find the associated ImportIndex
4196 DependencyIndex = ImportToIndexMap.FindRef(DependentObject);
4197 }
4198
4199 #if WITH_EDITOR
4200 // If we still didn't find index, maybe it was a duplicate export which got removed.
4201 // Check if we have a redirect to original.
4202 if (DependencyIndex.IsNull())
4203 {
4204 ***** DependencyIndex = ExportToIndexMap.FindRef(DuplicateRedirects[DependentObject]);
4205 }
4206 #endif
4207 // if we didn't find it (FindRef returns 0 on failure, which is good in this case), then we are in trouble, something went wrong somewhere
4208 checkf(!DependencyIndex.IsNull(), TEXT("Failed to find dependency index for %s (%s)"), *DependentObject->GetFullName(), *Object->GetFullName());
4209
4210 // add the import as an import for this export
4211 DependIndices.Add(DependencyIndex);
4212 }
4213 }
4214 }
4215
4216
4217
4218 if ( EndSavingIfCancelled( Linker, TempFilename ) )
4219 {
Most recent user affected CL: 2946394
Logs:
[Link Removed]
[Link Removed]
[Link Removed]
Repro steps unknown
UE4Editor_CoreUObject!UPackage::Save() [savepackage.cpp:4205] UE4Editor_UnrealEd!UEditorEngine::Save() [editorengine.cpp:3890] UE4Editor_UnrealEd!UCookOnTheFlyServer::SaveCookedPackage() [cookontheflyserver.cpp:2802] UE4Editor_UnrealEd!UCookOnTheFlyServer::TickCookOnTheSide() [cookontheflyserver.cpp:2261] UE4Editor_UnrealEd!UCookCommandlet::NewCook() [cookcommandlet.cpp:1241] UE4Editor_UnrealEd!UCookCommandlet::Main() [cookcommandlet.cpp:565] UE4Editor_Cmd!FEngineLoop::PreInit() [launchengineloop.cpp:1698] UE4Editor_Cmd!GuardedMain() [launch.cpp:110] UE4Editor_Cmd!GuardedMainWrapper() [launchwindows.cpp:126] UE4Editor_Cmd!WinMain() [launchwindows.cpp:200] UE4Editor_Cmd!__scrt_common_main_seh() [exe_common.inl:264] kernel32!<Unknown> ntdll!<Unknown>
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-30189 in the post.