Using 5.8, Is Anyone Successfully Packaging A Game With PVE Trees?

Can someone please help me resolve the following:

--
LogLoad: LoadMap: /Game/FirstPerson/Lvl_FirstPerson?Name=Player
Assertion failed: At >= 0 && At < (uint32)IndexStorage.Num() [File:D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Public\RawIndexBuffer.h] [Line: 198]

-- followed by:

Assertion failed: At >= 0 && At < (uint32)IndexStorage.Num() [File:D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Public\RawIndexBuffer.h] [Line: 198]

Basically, if there’s a PVE asset (skeletal mesh, skeleton, static mesh), 1 in 20 packages will run. The rest crash or freeze with the exact lines above upon trying to handle the one tree I’ve got in my scene.

I’ve tested this a dozen ways, to isolate the PVE asset. It’s is definitely the trees, and most likely the nanite foliage. Ultimately, I need help.