EXCEPTION_ACCESS_VIOLATION opening any PrimalGameData BP after epic update

I’ve started to get the following error opening when opening any PrimalGameData BP (after updating today).

Even the demo Generic Mod PrimalGameData_BP_GenericMod file crashes when opening.

Oddly EPIC launcher says version is 297.2-7471366-WINDOWS, however the error messages says 294.110 - so wonder if there is a file mix up?

Have tried running file validation with the same result. Any other suggestions to resolve this? It was working without issue on 16 July before update.


Fatal error!

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0xffffffff

VERSION: 294.110 
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd6226952e) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd622a9d90) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd622249b0) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd622241d6) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd622aa33c) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd622a8a76) + 0 bytes [UnknownFile:0]
UE4Editor-Engine.dll!UnknownFunction (0x00007ffd58f97fa0) + 0 bytes [UnknownFile:0]
UE4Editor-KismetCompiler.dll!UnknownFunction (0x00007ffd8cfda7a0) + 0 bytes [UnknownFile:0]
UE4Editor-KismetCompiler.dll!UnknownFunction (0x00007ffd8cfdb80b) + 0 bytes [UnknownFile:0]
UE4Editor-KismetCompiler.dll!UnknownFunction (0x00007ffd8cfdb338) + 0 bytes [UnknownFile:0]
UE4Editor-UnrealEd.dll!UnknownFunction (0x00007ffd57517f5b) + 0 bytes [UnknownFile:0]
UE4Editor-Engine.dll!UnknownFunction (0x00007ffd58839242) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd6219886e) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd62186201) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd621b6e2f) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd621ef68c) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd621b642e) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd621ef68c) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd621b642e) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd621ef68c) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd621b642e) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd621f6cdb) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd622e693f) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd6222dac1) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd6222d00d) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd6222db8b) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd6222d00d) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd6222cf2a) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd621c4053) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd6222ab10) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd621b96bb) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd621e071b) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd622e686c) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd6222dac1) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd6222d00d) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd6222db8b) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd6222d00d) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd6222cf2a) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd621c4053) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd6222ab10) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd621b96bb) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd621e071b) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd622e686c) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd6222dac1) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd6222d00d) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd6222db8b) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd6222d00d) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd6222cf2a) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd621c4053) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd6222ab10) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd621b96bb) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd621e071b) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd622e686c) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd622ef813) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffd622f5631) + 0 bytes [UnknownFile:0]
UE4Editor-Kismet.dll!UnknownFunction (0x00007ffd55f65bbf) + 0 bytes [UnknownFile:0]
UE4Editor-Kismet.dll!UnknownFunction (0x00007ffd55edb675) + 0 bytes [UnknownFile:0]
UE4Editor-Kismet.dll!UnknownFunction (0x00007ffd55f55562) + 0 bytes [UnknownFile:0]
UE4Editor-Kismet.dll!UnknownFunction (0x00007ffd55ee7d5c) + 0 bytes [UnknownFile:0]
UE4Editor-AssetTools.dll!UnknownFunction (0x00007ffd51e659e2) + 0 bytes [UnknownFile:0]
UE4Editor-UnrealEd.dll!UnknownFunction (0x00007ffd57608ba7) + 0 bytes [UnknownFile:0]
UE4Editor-AssetTools.dll!UnknownFunction (0x00007ffd51de3de9) + 0 bytes [UnknownFile:0]
UE4Editor-ContentBrowser.dll!UnknownFunction (0x00007ffd4da7d3d4) + 0 bytes [UnknownFile:0]
UE4Editor-ContentBrowser.dll!UnknownFunction (0x00007ffd4da081b3) + 0 bytes [UnknownFile:0]
UE4Editor-ContentBrowser.dll!UnknownFunction (0x00007ffd4da11e68) + 0 bytes [UnknownFile:0]
UE4Editor-ContentBrowser.dll!UnknownFunction (0x00007ffd4da89524) + 0 bytes [UnknownFile:0]
UE4Editor-ContentBrowser.dll!UnknownFunction (0x00007ffd4da01276) + 0 bytes [UnknownFile:0]
UE4Editor-ContentBrowser.dll!UnknownFunction (0x00007ffd4da0fecb) + 0 bytes [UnknownFile:0]
UE4Editor-ContentBrowser.dll!UnknownFunction (0x00007ffd4da0d5b6) + 0 bytes [UnknownFile:0]
UE4Editor-ContentBrowser.dll!UnknownFunction (0x00007ffd4da9e34f) + 0 bytes [UnknownFile:0]
UE4Editor-ContentBrowser.dll!UnknownFunction (0x00007ffd4da8976f) + 0 bytes [UnknownFile:0]
UE4Editor-Slate.dll!UnknownFunction (0x00007ffd582b1025) + 0 bytes [UnknownFile:0]
UE4Editor-Slate.dll!UnknownFunction (0x00007ffd5829cd90) + 0 bytes [UnknownFile:0]
UE4Editor-Core.dll!UnknownFunction (0x00007ffd5b42a4e8) + 0 bytes [UnknownFile:0]
UE4Editor-Core.dll!UnknownFunction (0x00007ffd5b406d1b) + 0 bytes [UnknownFile:0]
UE4Editor-Core.dll!UnknownFunction (0x00007ffd5b42b809) + 0 bytes [UnknownFile:0]
UE4Editor-Core.dll!UnknownFunction (0x00007ffd5b400ad9) + 0 bytes [UnknownFile:0]
USER32.dll!UnknownFunction (0x00007ffdda23681d) + 0 bytes [UnknownFile:0]
USER32.dll!UnknownFunction (0x00007ffdda236212) + 0 bytes [UnknownFile:0]
UE4Editor-Core.dll!UnknownFunction (0x00007ffd5b42c566) + 0 bytes [UnknownFile:0]
UE4Editor.exe!UnknownFunction (0x00007ff7a40bb038) + 0 bytes [UnknownFile:0]
UE4Editor.exe!UnknownFunction (0x00007ff7a40afb8f) + 0 bytes [UnknownFile:0]
UE4Editor.exe!UnknownFunction (0x00007ff7a40afbfa) + 0 bytes [UnknownFile:0]
UE4Editor.exe!UnknownFunction (0x00007ff7a40bca90) + 0 bytes [UnknownFile:0]
UE4Editor.exe!UnknownFunction (0x00007ff7a40bd9c9) + 0 bytes [UnknownFile:0]
KERNEL32.DLL!UnknownFunction (0x00007ffdd8ac7bd4) + 0 bytes [UnknownFile:0]
ntdll.dll!UnknownFunction (0x00007ffdda7ace71) + 0 bytes [UnknownFile:0]
ntdll.dll!UnknownFunction (0x00007ffdda7ace71) + 0 bytes [UnknownFile:0]


Me too!! Updated, always like this!

About to try a complete reinstall to fix it… Was hopeful to avoid the massive download :frowning:

I thought it was my computer. It turned out to be an official bug. I almost reinstalled the system

When you launch the devkit, can you do it from the ArkDevKit.bat file in the directory root?
This will open up a log window separate from the editor so we can see what the editor is doing even when it looks locked up.

See if it’s crashing in the exact same place every time. With any significant devkit updates, often your PC will have to recompile shaders and other intermediates. This might be what it’s doing and just running out of memory if that is the case it might just be a matter of repeating the process until it stops or getting a DDC from someone who has had the time to already rebuild it.

ya i get this crash when opening any Blueprints…as its loading the BP it gets to “utility functions.uassets…” then it stays on that for a bit then the crash error/msg.


Fatal error!

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0xffffffff

VERSION: 294.110 
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb90952e) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb949d90) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb8c49b0) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb8c41d6) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb94a33c) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb948a76) + 0 bytes [UnknownFile:0]
UE4Editor-Engine.dll!UnknownFunction (0x00007ffac7257fa0) + 0 bytes [UnknownFile:0]
UE4Editor-KismetCompiler.dll!UnknownFunction (0x00007ffac062a7a0) + 0 bytes [UnknownFile:0]
UE4Editor-KismetCompiler.dll!UnknownFunction (0x00007ffac062b80b) + 0 bytes [UnknownFile:0]
UE4Editor-KismetCompiler.dll!UnknownFunction (0x00007ffac062b338) + 0 bytes [UnknownFile:0]
UE4Editor-UnrealEd.dll!UnknownFunction (0x00007ffac3137f5b) + 0 bytes [UnknownFile:0]
UE4Editor-Engine.dll!UnknownFunction (0x00007ffac6af9242) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb83886e) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb826201) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb856e2f) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb88f68c) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb85642e) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb88f68c) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb85642e) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb88f68c) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb85642e) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb896cdb) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb98693f) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb8cdac1) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb8cd00d) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb8cdb8b) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb8cd00d) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb8ccf2a) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb864053) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb8cab10) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb8596bb) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb88071b) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb98686c) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb8cdac1) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb8cd00d) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb8cdb8b) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb8cd00d) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb8ccf2a) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb864053) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb8cab10) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb8596bb) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb88071b) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb98686c) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb8cdac1) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb8cd00d) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb8cdb8b) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb8cd00d) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb8ccf2a) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb864053) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb8cab10) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb8596bb) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb88071b) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb98686c) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb98f813) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x00007ffacb995631) + 0 bytes [UnknownFile:0]
UE4Editor-Kismet.dll!UnknownFunction (0x00007ffac1b85bbf) + 0 bytes [UnknownFile:0]
UE4Editor-Kismet.dll!UnknownFunction (0x00007ffac1afb675) + 0 bytes [UnknownFile:0]
UE4Editor-Kismet.dll!UnknownFunction (0x00007ffac1b75562) + 0 bytes [UnknownFile:0]
UE4Editor-Kismet.dll!UnknownFunction (0x00007ffac1b07877) + 0 bytes [UnknownFile:0]
UE4Editor-AssetTools.dll!UnknownFunction (0x00007ffab41728ec) + 0 bytes [UnknownFile:0]
UE4Editor-AssetTools.dll!UnknownFunction (0x00007ffab4167fde) + 0 bytes [UnknownFile:0]
UE4Editor-AssetTools.dll!UnknownFunction (0x00007ffab4176b87) + 0 bytes [UnknownFile:0]
UE4Editor-Slate.dll!UnknownFunction (0x00007ffac3c63a16) + 0 bytes [UnknownFile:0]
UE4Editor-Slate.dll!UnknownFunction (0x00007ffac3c6b128) + 0 bytes [UnknownFile:0]
UE4Editor-Slate.dll!UnknownFunction (0x00007ffac3c2d6cf) + 0 bytes [UnknownFile:0]
UE4Editor-Slate.dll!UnknownFunction (0x00007ffac3d2a6ca) + 0 bytes [UnknownFile:0]
UE4Editor-Slate.dll!UnknownFunction (0x00007ffac3d5dd22) + 0 bytes [UnknownFile:0]
UE4Editor-Slate.dll!UnknownFunction (0x00007ffac3c81fb6) + 0 bytes [UnknownFile:0]
UE4Editor-Slate.dll!UnknownFunction (0x00007ffac3c6dd5b) + 0 bytes [UnknownFile:0]
UE4Editor-Core.dll!UnknownFunction (0x00007ffac96ea67d) + 0 bytes [UnknownFile:0]
UE4Editor-Core.dll!UnknownFunction (0x00007ffac96c6d1b) + 0 bytes [UnknownFile:0]
UE4Editor-Core.dll!UnknownFunction (0x00007ffac96eb809) + 0 bytes [UnknownFile:0]
UE4Editor-Core.dll!UnknownFunction (0x00007ffac96c0ad9) + 0 bytes [UnknownFile:0]
USER32.dll!UnknownFunction (0x00007ffaf9b7681d) + 0 bytes [UnknownFile:0]
USER32.dll!UnknownFunction (0x00007ffaf9b76212) + 0 bytes [UnknownFile:0]
UE4Editor-Core.dll!UnknownFunction (0x00007ffac96ec566) + 0 bytes [UnknownFile:0]
UE4Editor.exe!UnknownFunction (0x00007ff7cff4b038) + 0 bytes [UnknownFile:0]
UE4Editor.exe!UnknownFunction (0x00007ff7cff3fb8f) + 0 bytes [UnknownFile:0]
UE4Editor.exe!UnknownFunction (0x00007ff7cff3fbfa) + 0 bytes [UnknownFile:0]
UE4Editor.exe!UnknownFunction (0x00007ff7cff4ca90) + 0 bytes [UnknownFile:0]
UE4Editor.exe!UnknownFunction (0x00007ff7cff4d9c9) + 0 bytes [UnknownFile:0]
KERNEL32.DLL!UnknownFunction (0x00007ffaf9ea7bd4) + 0 bytes [UnknownFile:0]
ntdll.dll!UnknownFunction (0x00007ffafb56ce71) + 0 bytes [UnknownFile:0]
ntdll.dll!UnknownFunction (0x00007ffafb56ce71) + 0 bytes [UnknownFile:0]


“utility functions.uasset”?
By chance do you have the S+ source files in your mod directory of the devkit?
If so, you should know that those files are chock-full of circular reference issues.

hmm funny i had to reinstall my dev kit upgraded my storage so new windows install. but i made a backup of my mod folder and restored it after the install. it worked before the upgrade with the s+ source files…i just removed them and boom…i can open all my blueprints again.

Thank you.

If you load the PGD from S + first after starting the Dev Kit, then you can load everything else afterwards as well. In case you need the S + sources.