I got this UE fatal error issue since Ghostrunner 2 came out. Ghostrunner 1 works fine
And I got the exact same UE fatal error on Forgive Me Father 1 since it came out (Forgive me Father 2 works fine)
They never managed to find why and to find a workaround, even helping them with 6 different debug test builds, they gave me a Steam Key, never worked...
I'm still wondering what is the matter with those 2 games : Forgive Me Father 1 and Ghostrunner 2. (I got around 2000 games on Steam and Galaxy, these are the only 2 games not working)
PS : you can find a somewhat hidden error log in this "UE fatal error" small window (the same SonnyPsycho posted earlier) by trying to drag a capture box around it, it will copy the entire hidden text which you can paste in any text editor.
Here an example I got :
Fatal error!
Unhandled Exception: EXCEPTION_FLT_INVALID_OPERATION
0x00007ff7937c1c6a FMF-Win64-Shipping.exe!UnknownFunction []
0x00007ff794dae8c9 FMF-Win64-Shipping.exe!UnknownFunction []
0x00007ff794dbcdfe FMF-Win64-Shipping.exe!UnknownFunction []
0x00007ff794d417b2 FMF-Win64-Shipping.exe!UnknownFunction []
0x00007ff794d4c1d8 FMF-Win64-Shipping.exe!UnknownFunction []
0x00007ff794c2b283 FMF-Win64-Shipping.exe!UnknownFunction []
0x00007ff794f604d4 FMF-Win64-Shipping.exe!UnknownFunction []
0x00007ff7952d52a1 FMF-Win64-Shipping.exe!UnknownFunction []
0x00007ff7952c43a6 FMF-Win64-Shipping.exe!UnknownFunction []
0x00007ff795275c82 FMF-Win64-Shipping.exe!UnknownFunction []
0x00007ff795261526 FMF-Win64-Shipping.exe!UnknownFunction []
0x00007ff79527e462 FMF-Win64-Shipping.exe!UnknownFunction []
0x00007ff794e85414 FMF-Win64-Shipping.exe!UnknownFunction []
0x00007ff792c9c3e5 FMF-Win64-Shipping.exe!UnknownFunction []
0x00007ff792ca28ec FMF-Win64-Shipping.exe!UnknownFunction []
0x00007ff792ca295a FMF-Win64-Shipping.exe!UnknownFunction []
0x00007ff792cacbff FMF-Win64-Shipping.exe!UnknownFunction []
0x00007ff795b6a8de FMF-Win64-Shipping.exe!UnknownFunction []
0x00007ffd75617614 KERNEL32.DLL!UnknownFunction []
0x00007ffd76e826a1 ntdll.dll!UnknownFunction []