EXCEPTION_ACCESS_VIOLATION writing address 0x0000000000000101

Summary

Hey!

I use external actors on my map.
I bought a package for UE via Fab and then migrated the assets over to UEFN.
When I want to launch the game, it loads briefly and then crashes.

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Assets

Steps to Reproduce

I bought a package via Fab with the Unreal Engine license. However, I have written to the publisher to see if they have optimized it for UEFN.
As a result, I received a compressed version of the package so that it doesn’t take up too much memory.
The only problem that the UEFN version of the publisher still has is that it uses blueprints everywhere that UEFN does not support.
That’s why I converted all the blueprints to static meshes.
If I now use these static meshes in UEFN, the crash occurs.
Otherwise there will be no crash. → The only time a crash occurs is when I migrate the static meshes to UEFN. It does not matter if I use them then, but only if I migrate them from UE to UEFN.

Expected Result

The player session should start normally and I should load into Fortnite.

Observed Result

The above error and UEFN crashes

Platform(s)

windows