I'm using the native Linux version of Sbox and launching the editor launcher from Sbox-dev. Whenever I try to open a project, either nothing happens or the loading screen crashes after a few seconds. I verified my files, and everything is fine. Here are the logs:
sbox-dev.log
2026/11/12 08:02:05.9570 [Generic] Hammer is unavailable. Native tools aren't supported on non-Windows builds.
2026/11/12 08:02:05.9737 [Generic] ModelDoc is unavailable. Native tools aren't supported on non-Windows builds.
2026/11/12 08:02:05.9737 [Generic] Animgraph is unavailable. Native tools aren't supported on non-Windows builds.
2026/11/12 08:02:05.9867 [engine/Engine] SteamAPI_Init succeeded. SteamID is [U:1:8008277] (76561197968274005), AppID is 590830
2026/11/12 08:02:06.1453 [engine/RenderSystem] Vulkan Physical Device: NVIDIA GeForce RTX 4070 SUPER
2026/11/12 08:02:06.2645 [engine/RenderSystem] Vulkan driver version: 620.70.6.0
2026/11/12 08:02:07.6414 [Generic] Couldn't find mount/NaturalSelection2/NaturalSelection2.dll - skipping.
2026/11/12 08:02:07.6418 [Generic] Couldn't find mount/SourceEngine/SourceEngine.dll - skipping.
2026/11/12 08:02:07.6516 [Generic] Couldn't find mount/mounts/mounts.dll - skipping.
2026/11/12 08:02:07.6516 [Generic] Couldn't find mount/SeriousEngine3/SeriousEngine3.dll - skipping.
2026/11/12 08:02:08.0119 [engine/Engine] failed to dlopen librenderdoc.so error=librenderdoc.so: cannot open shared object file: No such file or directory
2026/11/12 08:02:08.0276 [Generic] Editor Startup version 26.11.10a
2026/11/12 08:02:08.1103 [engine/Developer] CDirWatcher is not implemented on this platform, directory watches will do nothing
2026/11/12 08:02:08.6604 [Generic] Compiling Tools
2026/11/12 08:02:09.1538 [Generic] toolbase: Source file Imports.cs was modified after the cached assembly was compiled. Forcing recompile.
2026/11/12 08:02:09.2344 [Generic] Command screenshot_highres already exists - not overwriting (Take a high resolution screenshot you specify the width and height)
2026/11/12 08:02:09.2512 [Generic] Failed to associate project file extension System.NullReferenceException: Object reference not set to an instance of an object.
at Editor.FileAssociations.Create()
2026/11/12 08:02:09.2524 [Generic] Compiling base projects
2026/11/12 08:02:22.4083 [Generic] Validating cloud assets
2026/11/12 08:02:22.4116 [Generic] Validating cloud packages
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sbox-launcher.log
2026/11/12 08:04:44.1181 [Generic] Api Flush took 0.58s
2026/11/12 08:04:44.1532 [Reflection] NullStaticReferences: force-clearing readonly field ParticleLightingSystem.<Unlit>k__BackingField (Texture) — consider removing 'readonly'
2026/11/12 08:04:44.1752 [Generic] WebSurface unavailable - SteamHTMLSurface is null
2026/11/12 08:04:44.3331 [Reflection] NullStaticReferences: force-clearing readonly field UnderwaterPostProcess.ScreenMaterial (Material) — consider removing 'readonly'
2026/11/12 08:04:44.3660 [Reflection] NullStaticReferences: force-clearing readonly field ScreenSpaceReflectionsPass.ShaderCs (ComputeShader) — consider removing 'readonly'
2026/11/12 08:04:44.3660 [Reflection] NullStaticReferences: force-clearing readonly field ScreenSpaceReflectionsPass.ClassifyShaderCs (ComputeShader) — consider removing 'readonly'
2026/11/12 08:04:44.3660 [Reflection] NullStaticReferences: force-clearing readonly field ContactShadows.Compute (ComputeShader) — consider removing 'readonly'
2026/11/12 08:04:44.4452 [Reflection] NullStaticReferences: force-clearing readonly field ViewSetup.BlueNoise (Texture) — consider removing 'readonly'
2026/11/12 08:04:44.4455 [Reflection] NullStaticReferences: force-clearing readonly field ViewSetup.BrdfLookup (Texture) — consider removing 'readonly'
2026/11/12 08:04:44.4455 [Reflection] NullStaticReferences: force-clearing readonly field ViewSetup.LtcAmplitude (Texture) — consider removing 'readonly'
2026/11/12 08:04:44.4455 [Reflection] NullStaticReferences: force-clearing readonly field ViewSetup.LtcMatrix (Texture) — consider removing 'readonly'
2026/11/12 08:04:44.4469 [Reflection] NullStaticReferences: force-clearing readonly field Upscaler.EasuMaterial (Material) — consider removing 'readonly'
2026/11/12 08:04:44.4469 [Reflection] NullStaticReferences: force-clearing readonly field Upscaler.RcasMaterial (Material) — consider removing 'readonly'
2026/11/12 08:04:44.4469 [Reflection] NullStaticReferences: force-clearing readonly field QuadOverdraw.VisualizeMaterial (Material) — consider removing 'readonly'
2026/11/12 08:04:44.4469 [Reflection] NullStaticReferences: force-clearing readonly field MotionVectorLayer.MotionVectorMaterial (Material) — consider removing 'readonly'
2026/11/12 08:04:44.4469 [Reflection] NullStaticReferences: force-clearing readonly field ReactiveMaskLayer.MaskMaterial (Material) — consider removing 'readonly'
2026/11/12 08:04:44.4469 [Reflection] NullStaticReferences: force-clearing readonly field MotionVectorDebugLayer.DebugMaterial (Material) — consider removing 'readonly'
2026/11/12 08:04:44.4469 [Reflection] NullStaticReferences: force-clearing readonly field ReactiveMaskDebugLayer.DebugMaterial (Material) — consider removing 'readonly'
2026/11/12 08:04:44.4475 [Reflection] NullStaticReferences: force-clearing readonly field SharedPasses.DepthResolve (Material) — consider removing 'readonly'
2026/11/12 08:04:44.4475 [Reflection] NullStaticReferences: force-clearing readonly field ClusteredCullingLayer.Compute (ComputeShader) — consider removing 'readonly'
2026/11/12 08:04:44.4475 [Reflection] NullStaticReferences: force-clearing readonly field NativeOcclusionCull.Compute (ComputeShader) — consider removing 'readonly'
2026/11/12 08:04:44.4475 [Reflection] NullStaticReferences: force-clearing readonly field SharedPasses.DepthResolveCompute (ComputeShader) — consider removing 'readonly'
2026/11/12 08:04:44.7046 [Generic] NativeResourceCache: Resource still alive during shutown, this can indicate a leak: Texture [94210897996080] RenderTarget () will be force destroyed.
2026/11/12 08:04:44.7046 [Generic] NativeResourceCache: Total leaks: 1
2026/11/12 08:04:44.7073 [engine/Engine] Source2Shutdown
2026/11/12 08:04:44.7073 [engine/Engine] ShutdownSource2Logging