Unreal Engine Issues and Bug Tracker (UE-9114)

Description
This project crashes when opening most maps after converting to 4.7 Preview 5.
Also crashes after converting to 4.8 Main (tested in //depot/UE4/Promotable-CL-2429371). Crash log attached.
Crash Report:
[Link Removed]
Steps to Reproduce
1. Download the user's project (see comments for location)
2. Convert the project to 4.7 Preview 5
3. Open the project
4. File > Open Level
5. Open World.umap
Result:
Crash
Callstack
Call Stack
<unknown module>! KERNELBASE!RaiseException() 
<unknown module>! UE4Editor_Core!FOutputDeviceWindowsError::Serialize() 
<unknown module>! UE4Editor_Core!FOutputDevice::Logf__VA() 
<unknown module>! UE4Editor_Core!FDebug::AssertFailed() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::CreateExport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::IndexToObject() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::CreateExport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::IndexToObject() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::CreateExport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::CreateExportAndPreload() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::LoadAllObjects() 
<unknown module>! UE4Editor_CoreUObject!LoadPackageInternal() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImportInner() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::Verify() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::FinalizeCreation() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::Tick() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::CreateLinker() 
<unknown module>! UE4Editor_CoreUObject!GetPackageLinker() 
<unknown module>! UE4Editor_CoreUObject!LoadPackageInternal() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImportInner() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImportInner() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::CreateImport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::ResolveDependencyPlaceholder() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::ResolveDeferredDependencies() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::Preload() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::CreateExport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::IndexToObject() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::CreateExport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::IndexToObject() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::CreateExport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::CreateExportAndPreload() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::LoadAllObjects() 
<unknown module>! UE4Editor_CoreUObject!LoadPackageInternal() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImportInner() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImportInner() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::CreateImport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::ResolveDependencyPlaceholder() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::ResolveDeferredDependencies() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::Preload() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::CreateExport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::IndexToObject() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::CreateExport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::IndexToObject() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::CreateExport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::CreateExportAndPreload() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::LoadAllObjects() 
<unknown module>! UE4Editor_CoreUObject!LoadPackageInternal() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImportInner() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImportInner() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImportInner() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::Verify() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::FinalizeCreation() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::Tick() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::CreateLinker() 
<unknown module>! UE4Editor_CoreUObject!GetPackageLinker() 
<unknown module>! UE4Editor_CoreUObject!LoadPackageInternal() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImportInner() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImportInner() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::CreateImport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::ResolveDependencyPlaceholder() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::ResolveDeferredDependencies() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::Preload() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::CreateExport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::IndexToObject() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::CreateExport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::IndexToObject() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::CreateExport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::CreateExportAndPreload() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::LoadAllObjects() 
<unknown module>! UE4Editor_CoreUObject!LoadPackageInternal() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImportInner() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImportInner() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::Verify() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::FinalizeCreation() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::Tick() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::CreateLinker() 
<unknown module>! UE4Editor_CoreUObject!GetPackageLinker() 
<unknown module>! UE4Editor_CoreUObject!LoadPackageInternal() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImportInner() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImportInner() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::Verify() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::FinalizeCreation() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::Tick() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::CreateLinker() 
<unknown module>! UE4Editor_CoreUObject!GetPackageLinker() 
<unknown module>! UE4Editor_CoreUObject!LoadPackageInternal() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImportInner() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImportInner() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::CreateImport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::FinalizeBlueprint() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::Preload() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::CreateExport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::IndexToObject() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::CreateExport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::CreateExportAndPreload() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::LoadAllObjects() 
<unknown module>! UE4Editor_CoreUObject!LoadPackageInternal() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImportInner() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImportInner() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::Verify() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::FinalizeCreation() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::Tick() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::CreateLinker() 
<unknown module>! UE4Editor_CoreUObject!GetPackageLinker() 
<unknown module>! UE4Editor_CoreUObject!LoadPackageInternal() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImportInner() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImportInner() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::VerifyImport() 
<unknown module>! UE4Editor_CoreUObject!ULinkerLoad::Verify()
Community References
Can't open some maps in 4.7 Preview 5
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Fixed
Component	UE - Gameplay - Blueprint
Affects Versions	4.7, 4.8
Target Fix	4.7nux
Fix Commit	2435950
Release Commit	2435950
Created	Feb 4, 2015
Resolved	Feb 6, 2015
Updated	Apr 27, 2018