Crash when importing Alembic file

I’m getting a nearly instant crash when importing an Alembic file. I get as far as the options dialogue then the import begins and the crash occurs.

Assertion failed: Pair != nullptr [File:D:\Build\++UE4+Release-4.13+Compile\Sync\Engine\Source\Runtime\Core\Public\Containers\Map.h] [Line: 522] 

The last line in the call stack is:


The file is 675MB so within the importer limits. I can upload it somewhere but it’s not for distribution so I’d prefer not to if possible.

Here’s the call stack:

Hi Antidamage,

We currently have a ticket in with this that you can track here: Unreal Engine Issues and Bug Tracker (UE-35551)

Thanks for taking the time to report!