Crash opening a project (in 4.6.1) created in a newer version of the editor (4.7)

This crash apparently occurs when a project either created or converted into 4.7 is opened in 4.6(.1). User quotes include:

"booted up project. instant crash. "
"trying to open a project made in 7.0 in 6.1 "
"Opening a converted 4.7.0 P3 project in 4.6.1. I didn't really expect it to work, and well.... it doesn't [Image Removed] "

Likely related to this issue: https://jira.ol.epicgames.net/browse/UE-8407

ERROR MESSAGE:
Fatal error: [Link Removed] [Line: 54] Ran out of memory allocating 53994222768 bytes with alignment 0

[Not reproduced internally]

1. Create a project in 4.7.
2. Attempt to open that project in the 4.6.1 editor.

<unknown module>! KERNELBASE!RaiseException()
<unknown module>! UE4Editor_Core!FOutputDeviceWindowsError::Serialize()
<unknown module>! UE4Editor_Core!FMsg::Logf__VA()
<unknown module>! UE4Editor_Core!FMallocTBB::OutOfMemory()
<unknown module>! UE4Editor_Core!FMallocTBB::Realloc()
<unknown module>! UE4Editor_Core!TArray<FCustomVersion,FDefaultAllocator>::Empty()
<unknown module>! UE4Editor_Core!operator<<()
<unknown module>! UE4Editor_Core!FCustomVersionContainer::Serialize()
<unknown module>! UE4Editor_CoreUObject!operator<<()
<unknown module>! UE4Editor_AssetRegistry!FPackageReader::OpenPackageFile()
<unknown module>! UE4Editor_AssetRegistry!FAssetDataGatherer::ReadAssetFile()
<unknown module>! UE4Editor_AssetRegistry!FAssetDataGatherer::Run()
<unknown module>! UE4Editor_Core!FRunnableThreadWin::Run()
<unknown module>! UE4Editor_Core!FRunnableThreadWin::GuardedRun()
<unknown module>! kernel32!BaseThreadInitThunk()
<unknown module>! ntdll!RtlUserThreadStart()

Unable to Launch or Package Game