Crash on build

I am getting the following crash whenever I try to “build” this used to work and I dont know what would have caused it…

Unknown exception - code 00000001 (first/second chance not available)

Assertion failed: IsValidRef(GBufferResourcesUniformBuffer) [File:d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\renderer\private\PostProcess//SceneRenderTargets.h] [Line: 369] 

KERNELBASE + 109229 bytes
UE4Editor_Core!FOutputDeviceWindowsError::Serialize() + 292 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\private\windows\windowsplatformoutputdevices.cpp:95]
UE4Editor_Core!FOutputDevice::Logf__VA() + 248 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\private\misc\outputdevice.cpp:144]
UE4Editor_Core!FDebug::AssertFailed() + 1079 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\private\misc\outputdevice.cpp:224]
UE4Editor_Renderer!FSceneRenderTargets::GetGBufferResourcesUniformBuffer() + 68 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\renderer\private\postprocess\scenerendertargets.h:371]
UE4Editor_Renderer!FDeferredPixelShaderParameters::Set<FRHIPixelShader * __ptr64>() + 2148 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\renderer\private\postprocess\scenerendertargets.cpp:1902]
UE4Editor_Renderer!FMaterialShader::SetParameters<FRHIPixelShader * __ptr64>() + 2480 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\renderer\private\shaderbaseclasses.cpp:208]
UE4Editor_Renderer!TBasePassPixelShaderBaseType<FNoLightMapPolicy>::SetParameters() + 94 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\renderer\private\basepassrendering.h:338]
UE4Editor_Renderer!TBasePassDrawingPolicy<FNoLightMapPolicy>::SetSharedState() + 504 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\renderer\private\basepassrendering.h:549]
UE4Editor_Renderer!FDrawBasePassDynamicMeshAction::Process<FNoLightMapPolicy>() + 820 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\renderer\private\basepassrendering.cpp:305]
UE4Editor_Renderer!ProcessBasePassMesh<FDrawBasePassDynamicMeshAction>() + 912 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\renderer\private\basepassrendering.h:919]
UE4Editor_Renderer!FBasePassOpaqueDrawingPolicyFactory::DrawDynamicMesh() + 273 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\renderer\private\basepassrendering.cpp:365]
UE4Editor_Renderer!FRendererModule::DrawTileMesh() + 504 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\renderer\private\renderer.cpp:80]
UE4Editor_Engine!FTileRenderer::DrawTile() + 651 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\engine\private\tilerendering.cpp:169]
UE4Editor_Engine!`FCanvasTileRendererItem::Render_GameThread'::`5'::EURCMacro_DrawTileCommand::DoTask() + 357 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\engine\private\userinterface\canvas.cpp:599]
UE4Editor_Engine!TGraphTask<`FCanvasTileRendererItem::Render_GameThread'::`5'::EURCMacro_DrawTileCommand>::ExecuteTask() + 456 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\public\async\taskgraphinterfaces.h:669]
UE4Editor_Core!FTaskThread::ProcessTasks() + 3125 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\private\async\taskgraph.cpp:428]
UE4Editor_Core!FTaskThread::ProcessTasksUntilQuit() + 77 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\private\async\taskgraph.cpp:271]
UE4Editor_RenderCore!RenderingThreadMain() + 183 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\rendercore\private\renderingthread.cpp:282]
UE4Editor_RenderCore!FRenderingThread::Run() + 58 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\rendercore\private\renderingthread.cpp:385]
UE4Editor_Core!FRunnableThreadWin::Run() + 102 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\private\windows\windowsrunnablethread.cpp:73]
UE4Editor_Core!FRunnableThreadWin::GuardedRun() + 93 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\private\windows\windowsrunnablethread.cpp:26]
kernel32 + 88525 bytes
ntdll + 178321 bytes

Hi Botanicvelious -

Can you please upload your full crash logs which can be found here:

C:\Users\UserName\AppData\Local\Microsoft\Windows\WER\ReportQueue

and a copy of your DXDIAG?

Also if you can please let me know if you are using a template level or if your own and if it is your own can you give me a rundown of the type of assets that are in your level.

Thank You

Eric Ketchum