🎮 Game Error Codes What it means & how to fix it

ARC Raiders — 'An Unreal Process Has Crashed: UE-PioneerGame'

ARC Raiders runs on Unreal Engine 5 with the internal project name PioneerGame, so its signature GPU crash reads 'An Unreal Process Has Crashed: UE-PioneerGame', often paired with 'BREADCRUMB_ERR_EMPTY_QUEUE'. Because ARC Raiders ships with Easy Anti-Cheat, the fixes most players miss are overlay/anti-cheat conflicts and the -noeosoverlay launch flag — not just a driver update.

Error codes

'An Unreal Process Has Crashed: UE-PioneerGame' UE5's GPU crash handler fired — PioneerGame is ARC Raiders' internal Unreal project name

Cause: Overlays/anti-cheat hooking into the process, an unstable GPU driver, or DX12 on an unsupported card.

Fix:
  1. Add -dx11 to Steam launch options (Properties -> General -> Launch Options); DX12 crashes many rigs at launch.
  2. Add -noeosoverlay to disable the Epic Online Services overlay, a confirmed trigger for the UE-PioneerGame crash.
  3. Disable Steam, Discord and NVIDIA/AMD in-game overlays — EAC dislikes other programs hooking the process.
  4. Repair Microsoft Visual C++ Redistributables (x64 + x86) to replace missing DLLs.
'BREADCRUMB_ERR_EMPTY_QUEUE' A GPU-side breadcrumb crash surfaced alongside the UE-PioneerGame dump

Cause: Overlay/monitoring tools hooking the GPU queue, or RAM running at an unstable frequency.

Fix:
  1. Close MSI Afterburner, RivaTuner, NZXT CAM, ShadowPlay and AMD Record & Stream before launch.
  2. Check RAM is running at its rated XMP/EXPO speed — incorrect RAM frequency has caused this crash for several players.
  3. Turn off Windows Core Isolation / Memory Integrity (Settings -> Privacy & Security -> Windows Security -> Device Security).
EXCEPTION_ACCESS_VIOLATION at launch The game reads invalid memory as UE initialises

Cause: Corrupted Unreal shader cache or a bad driver.

Fix:
  1. Verify integrity of game files in Steam to replace corrupted shaders.
  2. Clean-install the latest GPU driver with DDU, then the newest NVIDIA/AMD build.
  3. Run the game's .exe as Administrator.

Fixes that work for most ARC Raiders errors

  1. Launch with -dx11 -noeosoverlay, then disable every overlay (Steam/Discord/GPU) — the two changes behind most UE-PioneerGame and BREADCRUMB crashes on EAC-protected ARC Raiders.
  2. Repair Visual C++ Redistributables (x64 + x86) and install the DirectX End-User Runtime.
  3. Verify game files, clean-install the GPU driver with DDU, and confirm RAM is at its rated XMP/EXPO speed.

FAQ

Is 'UE-PioneerGame' a virus?

No — PioneerGame is ARC Raiders' internal Unreal Engine 5 project name. 'An Unreal Process Has Crashed: UE-PioneerGame' is UE5's GPU crash-dump wrapper, usually an overlay/anti-cheat or driver conflict.

What does BREADCRUMB_ERR_EMPTY_QUEUE mean?

It's a GPU breadcrumb crash that appears with the UE-PioneerGame dump. Close overlay/monitoring tools (Afterburner, RivaTuner, ShadowPlay) and check your RAM is at its rated speed.

The -noeosoverlay flag — where do I put it?

In Steam, right-click ARC Raiders -> Properties -> General -> Launch Options, and add: -dx11 -noeosoverlay. It disables the Epic Online Services overlay that triggers the crash for many players.

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