So, i’m working on a small project, but it has a large map so what I am doing is i’m seperating the navmesh into chunks by using multiple NavMeshBoundsVolumes. Now, initially this isn’t a problem, however, when trying to align them to where I want I often over/under shoot and have to re-align them. This is where the problem comes in, if i don’t let the navmesh build finish before moving it again to where i want it, it will crash flax. (A new one, In the provided example, If I move one of the nav meshes, and then move it again (even after it builds) it still crashes.)
https://github.com/Xapher/NavMeshIssue
Error:
Unhandles Exception: EXCEPTION_ACCESS_VIOLATION
Reading address 0x… some address
Now, I have a question to go along with this issue, Am I using NavMeshBoundVolumes like they’re intended, or is it supposed to be one large bounds to cover the whole map, and then selective bounds for areas not connected.
The only real reason i am using the volumes is so that i can recalculate the navMesh within the bounds of that ‘chunk’ when something is changed.
After looking at the logs it seems like it’s a memory issue.
External Used Virtual Memory: 263.07 Gb (0%) - I don’t got that much ram…
================================================================
Start of the log, 2025-05-08 22:09:07
================================================================
[ 00:00:00.003 ]: [Info] Flax Engine
[ 00:00:00.003 ]: [Info] Platform: Windows x64 (Development)
[ 00:00:00.003 ]: [Info] Version 1.10.6705
[ 00:00:00.003 ]: [Info] Compiled: Apr 17 2025 08:47:19 C++14
[ 00:00:00.004 ]: [Info] Compiled with Visual C++ 19.43.34809.00
[ 00:00:00.004 ]: [Info] Product: Flax Editor, Company: Flax
[ 00:00:00.004 ]: [Info] Current culture: en-US
[ 00:00:00.004 ]: [Info] Command line: -project 'A:\Projects\Flax\NavMeshBug'
[ 00:00:00.004 ]: [Info] Base folder: G:\FlaxEngine
[ 00:00:00.004 ]: [Info] Binaries folder: G:\FlaxEngine/Binaries/Editor/Win64/Development/
[ 00:00:00.004 ]: [Info] Temporary folder: C:\Users/Xapher/AppData/Local/Temp/93e61a0c-4451-a01a-a9d9-6c950de85731
[ 00:00:00.004 ]: [Info] Project folder: A:\Projects/Flax/NavMeshBug
[ 00:00:00.004 ]: [Info] Project name: NavMeshBug
[ 00:00:00.004 ]: [Info] CPU package count: 1, Core count: 8, Logical processors: 16
[ 00:00:00.004 ]: [Info] CPU Page size: 4 Kb, cache line size: 64 bytes
[ 00:00:00.004 ]: [Info] L1 cache: 512 Kb, L2 cache: 4 Mb, L3 cache: 16 Mb
[ 00:00:00.004 ]: [Info] Clock speed: 10 MHz
[ 00:00:00.004 ]: [Info] Physical Memory: 27.88 Gb total, 8.08 Gb used (28.99%)
[ 00:00:00.004 ]: [Info] Virtual Memory: 128 Tb total, 4.31 Gb used (0%)
[ 00:00:00.004 ]: [Info] Program Size: 24.21 Mb
[ 00:00:00.004 ]: [Info] Main thread id: 0x4d80, Process id: 22324
[ 00:00:00.004 ]: [Info] Desktop size: X:1920 Y:1080
[ 00:00:00.004 ]: [Info] Virtual Desktop size: X:0 Y:0 Width:3600 Height:1080
[ 00:00:00.004 ]: [Info] Screen DPI: 96
[ 00:00:00.004 ]: [Info] CPU: AMD Ryzen 7 5700G with Radeon Graphics
[ 00:00:00.004 ]: [Info] Microsoft Windows 10 Home 64-bit (10.0.19045)
[ 00:00:00.004 ]: [Info] Last project open version: 1.10.6705
[ 00:00:00.005 ]: [Info] Initialize Objects Removal Service...
[ 00:00:00.005 ]: [Info] Initialize Thread Pool...
[ 00:00:00.005 ]: [Info] Spawning 7 Thread Pool workers
[ 00:00:00.006 ]: [Info] Thread 'Thread Pool 0' ID=0x5770 started with priority Normal
[ 00:00:00.006 ]: [Info] Thread 'Thread Pool 1' ID=0x5390 started with priority Normal
[ 00:00:00.006 ]: [Info] Thread 'Thread Pool 2' ID=0x5e8 started with priority Normal
[ 00:00:00.006 ]: [Info] Thread 'Thread Pool 4' ID=0x4724 started with priority Normal
[ 00:00:00.006 ]: [Info] Thread 'Thread Pool 5' ID=0x1e48 started with priority Normal
[ 00:00:00.006 ]: [Info] Thread 'Thread Pool 6' ID=0x44f0 started with priority Normal
[ 00:00:00.006 ]: [Info] Initialize Time...
[ 00:00:00.006 ]: [Info] Thread 'Thread Pool 3' ID=0x3438 started with priority Normal
[ 00:00:00.006 ]: [Info] Initialize ContentStorage...
[ 00:00:00.006 ]: [Info] Initialize JobSystem...
[ 00:00:00.006 ]: [Info] Thread 'Job System 0' ID=0x248 started with priority AboveNormal
[ 00:00:00.006 ]: [Info] Thread 'Job System 1' ID=0x39bc started with priority AboveNormal
[ 00:00:00.006 ]: [Info] Thread 'Job System 2' ID=0x4e54 started with priority AboveNormal
[ 00:00:00.006 ]: [Info] Thread 'Job System 3' ID=0xd44 started with priority AboveNormal
[ 00:00:00.006 ]: [Info] Thread 'Job System 4' ID=0x3970 started with priority AboveNormal
[ 00:00:00.006 ]: [Info] Thread 'Job System 5' ID=0x53bc started with priority AboveNormal
[ 00:00:00.007 ]: [Info] Thread 'Job System 8' ID=0x3a00 started with priority AboveNormal
[ 00:00:00.007 ]: [Info] Initialize Font Manager...
[ 00:00:00.007 ]: [Info] Thread 'Job System 6' ID=0x344c started with priority AboveNormal
[ 00:00:00.007 ]: [Info] Thread 'Job System 7' ID=0x3ff0 started with priority AboveNormal
[ 00:00:00.007 ]: [Info] FreeType initialized, version: 2.13.2
[ 00:00:00.007 ]: [Info] Initialize Content...
[ 00:00:00.007 ]: [Info] Thread 'Job System 12' ID=0x2640 started with priority AboveNormal
[ 00:00:00.007 ]: [Info] Thread 'Job System 13' ID=0x55c8 started with priority AboveNormal
[ 00:00:00.007 ]: [Info] Thread 'Job System 14' ID=0x483c started with priority AboveNormal
[ 00:00:00.007 ]: [Info] Thread 'Job System 9' ID=0x511c started with priority AboveNormal
[ 00:00:00.007 ]: [Info] Loading Asset Cache A:\Projects/Flax/NavMeshBug/Cache/AssetsCache.dat...
[ 00:00:00.007 ]: [Info] Thread 'Job System 11' ID=0x3354 started with priority AboveNormal
[ 00:00:00.007 ]: [Info] Thread 'Job System 10' ID=0x5500 started with priority AboveNormal
[ 00:00:00.007 ]: [Info] Thread 'Job System 15' ID=0x4d60 started with priority AboveNormal
[ 00:00:00.009 ]: [Info] Asset Cache loaded 177 entries in 2ms (0 rejected)
[ 00:00:00.009 ]: [Info] Creating 8 content loading threads...
[ 00:00:00.009 ]: [Info] Thread 'Load Thread 0' ID=0x1a1c started with priority Normal
[ 00:00:00.009 ]: [Info] Thread 'Load Thread 1' ID=0x4f40 started with priority Normal
[ 00:00:00.009 ]: [Info] Initialize Localization...
[ 00:00:00.009 ]: [Info] Thread 'Load Thread 3' ID=0x2728 started with priority Normal
[ 00:00:00.009 ]: [Info] Thread 'Load Thread 4' ID=0x47ac started with priority Normal
[ 00:00:00.009 ]: [Info] Thread 'Load Thread 2' ID=0x543c started with priority Normal
[ 00:00:00.009 ]: [Info] Thread 'Load Thread 5' ID=0x99c started with priority Normal
[ 00:00:00.009 ]: [Info] Thread 'Load Thread 6' ID=0x5218 started with priority Normal
[ 00:00:00.009 ]: [Info] Thread 'Load Thread 7' ID=0x644 started with priority Normal
[ 00:00:00.022 ]: [Info] Initialize AssetsImportingManager...
[ 00:00:00.022 ]: [Info] Initialize AssetsExportingManager...
[ 00:00:00.022 ]: [Info] Initialize Shader Cache Manager...
[ 00:00:00.022 ]: [Info] Initialize Shaders Compilation Service...
[ 00:00:00.023 ]: [Info] Thread 'File System Watchers' ID=0x40f4 started with priority BelowNormal
[ 00:00:00.023 ]: [Info] Initialize Debug Draw...
[ 00:00:00.023 ]: [Info] Initialize GameSettings...
[ 00:00:00.024 ]: [Info] Initialize Input...
[ 00:00:00.024 ]: [Info] Initialize Audio...
[ 00:00:00.024 ]: [Info] Audio system initialization... (backend: OpenAL)
[ 00:00:00.044 ]: [Info] Rebuilding audio contexts
[ 00:00:00.056 ]: [Info] OpenAL Soft (1.1 ALSOFT 1.23.1)
[ 00:00:00.056 ]: [Info] [active] Headphones (Crusher ANC 2 Stereo)
[ 00:00:00.056 ]: [Info] Digital Audio (S/PDIF) (3- High Definition Audio Device)
[ 00:00:00.056 ]: [Info] Sceptre L24 (NVIDIA High Definition Audio)
[ 00:00:00.056 ]: [Info] Speakers (Steam Streaming Microphone)
[ 00:00:00.056 ]: [Info] Speakers (Steam Streaming Speakers)
[ 00:00:00.056 ]: [Info] Initialize Video...
[ 00:00:00.056 ]: [Info] Initialize Graphics...
================================================================
[ 00:00:00.057 ]: [Info] Creating Graphics Device...
[ 00:00:00.189 ]: [Info] Adapter 0: 'NVIDIA GeForce RTX 2070', DirectX 11
[ 00:00:00.189 ]: [Info] Dedicated Video Memory: 7.82 Gb, Dedicated System Memory: 0 b, Shared System Memory: 13.94 Gb, Output(s): 2
[ 00:00:00.191 ]: [Info] Adapter 1: 'Microsoft Basic Render Driver', DirectX 11
[ 00:00:00.191 ]: [Info] Dedicated Video Memory: 0 b, Dedicated System Memory: 0 b, Shared System Memory: 13.94 Gb, Output(s): 0
[ 00:00:00.301 ]: [Info] Video output '\\.\DISPLAY1' 1920x1080 120 Hz
[ 00:00:00.301 ]: [Info] Video output '\\.\DISPLAY2' 1680x1050 59.954 Hz
[ 00:00:00.404 ]: [Info] Total graphics memory: 7.82 Gb
[ 00:00:00.404 ]: [Info] GPU Device created: NVIDIA GeForce RTX 2070
[ 00:00:00.404 ]: [Info] Renderer: DirectX 11, Shader Profile: DirectX SM5, Feature Level: SM5, Driver: 572.16
================================================================
[ 00:00:00.406 ]: [Info] Initialize Windows Manager...
[ 00:00:00.406 ]: [Info] Initialize Scripting...
[ 00:00:00.407 ]: [Info] Found hostfxr in C:\Program Files\dotnet\host\fxr\9.0.1\hostfxr.dll
[ 00:00:00.450 ]: [Info] .NET runtime version: .NET 9.0.1
[ 00:00:00.460 ]: [Info] Assembly System.Private.CoreLib loaded in 3ms
[ 00:00:00.494 ]: [Info] Caching classes for assembly System.Private.CoreLib took 34ms
[ 00:00:00.495 ]: [Info] Assembly FlaxEngine.CSharp loaded in 1ms
[ 00:00:00.575 ]: [Info] Caching classes for assembly FlaxEngine.CSharp took 79ms
[ 00:00:00.595 ]: [Info] Using FlaxAPI in Development
[ 00:00:00.599 ]: [Info] Main render task created
[ 00:00:00.599 ]: [Info] Scripting Engine initializated! (time: 193ms)
[ 00:00:00.600 ]: [Info] Initialize Animations...
[ 00:00:00.600 ]: [Info] Initialize Editor Analytics...
[ 00:00:00.600 ]: [Info] Editor analytics service is enabled. Curl version: 7.88.1
[ 00:00:00.600 ]: [Info] Initialize Viewport Icons Renderer...
[ 00:00:00.600 ]: [Info] Initialize Scripts Builder...
[ 00:00:00.601 ]: [Info] Initialize Prefab Manager...
[ 00:00:00.601 ]: [Info] Initialize Code Editing Manager...
[ 00:00:00.605 ]: [Info] Initialize Behaviors...
[ 00:00:00.605 ]: [Info] Initialize Profiling Tools...
[ 00:00:00.605 ]: [Info] Initialize Physics...
[ 00:00:00.605 ]: [Info] Setup NVIDIA PhysX 5.1.3
[ 00:00:00.606 ]: [Info] Initialize Custom Editors Util...
[ 00:00:00.635 ]: [Info] Assembly 'FlaxEngine.CSharp' scanned for custom editors in 28 ms
[ 00:00:00.635 ]: [Info] Initialize Game Cooker...
[ 00:00:00.635 ]: [Info] Initialize DebugCommands...
[ 00:00:00.635 ]: [Info] Initialize Render2D...
[ 00:00:00.635 ]: [Info] Initialize Renderer...
[ 00:00:00.638 ]: [Info] Initialize Terrain Manager...
[ 00:00:00.638 ]: [Info] Initialize Atmosphere Pre Compute...
[ 00:00:00.638 ]: [Info] Initialize Navigation...
[ 00:00:00.638 ]: [Info] Initialize Particle Manager...
[ 00:00:00.639 ]: [Info] Initialize ShadowsOfMordor Builder...
[ 00:00:00.639 ]: [Info] Initialize CSG Builder...
[ 00:00:00.639 ]: [Info] Initialize Plugin Manager...
[ 00:00:00.639 ]: [Info] Initialize Streaming...
[ 00:00:00.639 ]: [Info] Initialize Scene Manager...
[ 00:00:00.639 ]: [Info] Initialize Screen...
[ 00:00:00.639 ]: [Info] Initialize Probes Renderer...
[ 00:00:00.639 ]: [Info] Initialize Online...
[ 00:00:00.639 ]: [Info] Initialize Network Manager...
[ 00:00:00.639 ]: [Info] Initialize Network Replication...
[ 00:00:00.639 ]: [Info] Engine services are ready!
[ 00:00:00.639 ]: [Info] Showing splash screen
[ 00:00:00.654 ]: [Info] Setting up C# Editor...
[ 00:00:00.692 ]: [Info] Loaded project Flax, version 1.10.6705
[ 00:00:00.711 ]: [Info] Loaded project NavMeshBug, version 1.0
[ 00:00:00.714 ]: [Info] Register Editor module FlaxEditor.Options.OptionsModule
[ 00:00:00.715 ]: [Info] Register Editor module FlaxEditor.Modules.ProjectCacheModule
[ 00:00:00.715 ]: [Info] Register Editor module FlaxEditor.Modules.SceneModule
[ 00:00:00.715 ]: [Info] Register Editor module FlaxEditor.Modules.WindowsModule
[ 00:00:00.718 ]: [Info] Register Editor module FlaxEditor.Modules.UIModule
[ 00:00:00.718 ]: [Info] Register Editor module FlaxEditor.Content.Thumbnails.ThumbnailsModule
[ 00:00:00.719 ]: [Info] Register Editor module FlaxEditor.Modules.SimulationModule
[ 00:00:00.719 ]: [Info] Register Editor module FlaxEditor.Modules.PrefabsModule
[ 00:00:00.719 ]: [Info] Register Editor module FlaxEditor.Modules.SceneEditingModule
[ 00:00:00.719 ]: [Info] Register Editor module FlaxEditor.Modules.ContentEditingModule
[ 00:00:00.719 ]: [Info] Register Editor module FlaxEditor.Modules.ContentDatabaseModule
[ 00:00:00.719 ]: [Info] Register Editor module FlaxEditor.Modules.ContentImportingModule
[ 00:00:00.720 ]: [Info] Register Editor module FlaxEditor.Modules.SourceCodeEditing.CodeEditingModule
[ 00:00:00.720 ]: [Info] Register Editor module FlaxEditor.Modules.SourceCodeEditing.CodeDocsModule
[ 00:00:00.722 ]: [Info] Register Editor module FlaxEditor.Modules.ProgressReportingModule
[ 00:00:00.722 ]: [Info] Register Editor module FlaxEditor.Modules.ContentFindingModule
[ 00:00:00.727 ]: [Info] Changing editor state from to LoadingState
[ 00:00:00.729 ]: [Info] Editor init
[ 00:00:00.729 ]: [Info] Options file path: C:\Users\Xapher\AppData\Roaming\Flax\EditorOptions.json
[ 00:00:00.729 ]: [Info] Loading editor options
[ 00:00:00.799 ]: [Info] Editor options changed!
[ 00:00:01.053 ]: [Info] Previews cache count: 1 (capacity for 225 icons)
[ 00:00:01.056 ]: [Info] Add code editor System Default
[ 00:00:01.056 ]: [Info] Add code editor Visual Studio 2022
[ 00:00:01.056 ]: [Info] Add code editor Default
[ 00:00:01.056 ]: [Info] Select code editor Visual Studio 2022
================================================================
[ 00:00:01.068 ]: [Info] Starting scripts compilation...
[ 00:00:01.068 ]: [Info] Command: G:\FlaxEngine/Binaries/Tools/Flax.Build.exe -log -logfile= -build -mutex -buildtargets=GameEditorTarget -skiptargets=FlaxEditor -platform=Windows -arch=x64 -configuration=Development
[ 00:00:01.146 ]: [Info] Flax.Build 1.0.0
[ 00:00:01.203 ]: [Info] Building targets...
[ 00:00:01.220 ]: [Info] Missing Android SDK. Cannot build for Android platform.
[ 00:00:01.244 ]: [Info] Building C# only
Building target GameEditorTarget in Development for Windows x64
[ 00:00:01.253 ]: [Info] Building referenced target Flax
[ 00:00:02.032 ]: [Info] Building for Windows without Vulkan rendering backend (Vulkan SDK is missing)
[ 00:00:02.041 ]: [Info] Using .NET SDK 9.0.102, runtime 9.0.1 (C:\Program Files\dotnet\)
[ 00:00:02.624 ]: [Info] Found 3 valid and 0 invalid actions in Task Graph cache
[ 00:00:02.625 ]: [Info] Done!
[ 00:00:02.627 ]: [Info] Total time: 00:00:01.4964186
[ 00:00:02.645 ]: [Info] Scripts reloading start
[ 00:00:02.648 ]: [Info] Loading binary modules from build info file A:\Projects/Flax/NavMeshBug/Binaries/GameEditorTarget/Windows/x64/Development/GameEditorTarget.Build.json
[ 00:00:02.648 ]: [Info] Loading binary module Game
[ 00:00:02.649 ]: [Info] Assembly Game.CSharp loaded in 1ms
[ 00:00:02.652 ]: [Info] Caching classes for assembly Game.CSharp took 2ms
[ 00:00:02.652 ]: [Info] Assembly 'Game.CSharp' scanned for custom editors in 0 ms
[ 00:00:02.652 ]: [Info] Scripts reloading end. Total time: 7ms
[ 00:00:02.663 ]: [Info] Project database created in 11 ms. Items count: 247
[ 00:00:02.677 ]: [Info] Editor end init
[ 00:00:02.677 ]: [Info] Changing editor state from LoadingState to EditingSceneState
[ 00:00:02.685 ]: [Info] Searching for valid Control
[ 00:00:02.687 ]: [Info] Found 24 types (in 2 ms)
[ 00:00:02.688 ]: [Info] Searching for valid Actor
[ 00:00:02.689 ]: [Info] Found 52 types (in 0 ms)
[ 00:00:02.905 ]: [Info] Loading editor windows layout from 'A:\Projects/Flax/NavMeshBug/Cache/WindowsLayout.xml'
[ 00:00:02.926 ]: [Info] Closing splash screen
[ 00:00:02.927 ]: [Info] Loading last opened scene: Scene
[ 00:00:02.929 ]: [Info] Changing editor state from EditingSceneState to ChangingScenesState
[ 00:00:02.937 ]: [Info] Loading scene...
[ 00:00:02.946 ]: [Info] Created graph for scene 'Scene' in 2 ms
[ 00:00:02.947 ]: [Info] Changing editor state from ChangingScenesState to EditingSceneState
[ 00:00:02.947 ]: [Info] Scene loaded in 9ms
[ 00:00:02.951 ]: [Info] Resizing navmesh Default from 0 to 4096 tiles capacity
[ 00:00:03.043 ]: [Info] Starting Atmosphere Pre Compute service
[ 00:00:09.613 ]: [Info] Resizing navmesh Default from 4096 to 8192 tiles capacity
================================================================
[ 00:00:09.620 ]: [Error] Critical error! Reason: Unhandled exception: EXCEPTION_ACCESS_VIOLATION reading address 0xfaf350c4
[ 00:00:09.708 ]: [Error] Stack trace:
[ 00:00:09.708 ]: [Error] at FlaxEditor.exe!dtNavMesh::unconnectLinks() in C:\Users\Wojtek\Flax\FlaxEngine\Source\ThirdParty\recastnavigation\DetourNavMesh.cpp:line 358
[ 00:00:09.708 ]: [Error] at FlaxEditor.exe!dtNavMesh::removeTile() in C:\Users\Wojtek\Flax\FlaxEngine\Source\ThirdParty\recastnavigation\DetourNavMesh.cpp:line 1298
[ 00:00:09.708 ]: [Error] at FlaxEditor.exe!NavMeshRuntime::AddTileInternal() in C:\Users\Wojtek\Flax\FlaxEngine\Source\Engine\Navigation\NavMeshRuntime.cpp:line 630
[ 00:00:09.708 ]: [Error] at FlaxEditor.exe!NavMeshRuntime::AddTile() in C:\Users\Wojtek\Flax\FlaxEngine\Source\Engine\Navigation\NavMeshRuntime.cpp:line 434
[ 00:00:09.708 ]: [Error] at FlaxEditor.exe!GenerateTile() in C:\Users\Wojtek\Flax\FlaxEngine\Source\Engine\Navigation\NavMeshBuilder.cpp:line 691
[ 00:00:09.708 ]: [Error] at FlaxEditor.exe!NavMeshTileBuildTask::Run() in C:\Users\Wojtek\Flax\FlaxEngine\Source\Engine\Navigation\NavMeshBuilder.cpp:line 764
[ 00:00:09.708 ]: [Error] at FlaxEditor.exe!Task::Execute() in C:\Users\Wojtek\Flax\FlaxEngine\Source\Engine\Threading\Task.cpp:line 157
[ 00:00:09.708 ]: [Error] at FlaxEditor.exe!ThreadPool::ThreadProc() in C:\Users\Wojtek\Flax\FlaxEngine\Source\Engine\Threading\ThreadPool.cpp:line 118
[ 00:00:09.708 ]: [Error] at FlaxEditor.exe!ThreadBase::Run() in C:\Users\Wojtek\Flax\FlaxEngine\Source\Engine\Platform\Base\ThreadBase.cpp:line 97
[ 00:00:09.708 ]: [Error] at FlaxEditor.exe!Win32Thread::ThreadProc() in C:\Users\Wojtek\Flax\FlaxEngine\Source\Engine\Platform\Win32\Win32Thread.cpp:line 99
[ 00:00:09.708 ]: [Error] at KERNEL32.DLL!0x7ffd4c707374
[ 00:00:09.708 ]: [Error] at ntdll.dll!0x7ffd4e5bcc91
[ 00:00:09.708 ]: [Error] Total Used Physical Memory: 8.47 Gb (30%)
[ 00:00:09.708 ]: [Error] Total Used Virtual Memory: 264.05 Gb (0%)
[ 00:00:09.708 ]: [Error] Process Used Physical Memory: 378.43 Mb (1%)
[ 00:00:09.708 ]: [Error] Process Used Virtual Memory: 1004.82 Mb (0%)
[ 00:00:09.708 ]: [Error] External Used Physical Memory: 8.1 Gb (29%)
[ 00:00:09.708 ]: [Error] External Used Virtual Memory: 263.07 Gb (0%)
[ 00:00:09.709 ]: [Error] Creating Mini Dump to A:\Projects/Flax/NavMeshBug/Logs/Crash_2025_05_08_22_09_07/Minidump.dmp
================================================================