File missing or corrupt

Evert time I launch S&box, I get a black screen and a message saying that a file is either missing or corrupted and I need to validate the files. I tried validating it, reinstalling, moving it to a different drive, and switching to the staging branch but nothing worked.

Log:
2026/04/05 15:43:37.5967 [engine/Engine] SteamAPI_Init succeeded.  SteamID is [U:1:77564787] (76561198037830515), AppID is 590830
2026/04/05 15:43:44.9729 [engine/RenderSystem] Layer GalaxyOverlayVkLayer uses API version 1.1 which is older than the application specified API version of 1.2. May cause issues.
2026/04/05 15:43:44.9729 [engine/RenderSystem] Layer GalaxyOverlayVkLayer_VERBOSE uses API version 1.1 which is older than the application specified API version of 1.2. May cause issues.
2026/04/05 15:43:44.9729 [engine/RenderSystem] Layer GalaxyOverlayVkLayer_DEBUG uses API version 1.1 which is older than the application specified API version of 1.2. May cause issues.
2026/04/05 15:43:45.0477 [engine/RenderSystem] Graphics Device changed, resetting video config
2026/04/05 15:43:45.0477 [engine/RenderSystem] Saved video settings config to 'cfg\video.txt'
2026/04/05 15:43:45.0660 [engine/RenderSystem] Vulkan Physical Device: AMD Radeon RX 7800 XT
2026/04/05 15:43:45.0660 [engine/RenderSystem] VK_EXT_extended_dynamic_state_2 does not support extendedDynamicState2PatchControlPoints, disabling.
2026/04/05 15:43:45.0885 [engine/RenderSystem] Unable to open Vulkan pipeline cache shadercache\vulkan\shaders.cache file - might not exist yet.
2026/04/05 15:43:45.0963 [engine/RenderSystem] Vulkan driver version: 2.0.388
2026/04/05 15:43:45.5289 [engine/RenderSystem] Saved video settings config to 'cfg\video.txt'
2026/04/05 15:43:45.5289 [engine/Engine] WARNING: Local content might be corrupt or missing files
2026/04/05 15:43:45.5289 [engine/Assert] C:\actions-runner\_work\sbox\sbox\src\filesystem\basefilesystem.cpp (5462) : Assertion Failed in function CBaseFileSystem::MarkContentCorrupt():
false
Content being marked corrupt.  bMissingFilesOnly = false, pFile specified as 'NULL', reason: 'CAppSystemDict::LoadSystemAndDependencies: nLoadError: 126, RequestModule: NULL, RequestInterface: NULL, Module: materialsystem2, Interface: VMaterialSystem2_001'
2026/04/05 15:43:45.5289 [engine/Engine] Sending Steam API content notification
2026/04/05 15:46:16.7404 [engine/Engine] CAppSystemDict:Unable to load module materialsystem2 (Dependency of application), error 126


Try putting "-novr" in your launch options, it worked for me.

Edit: It also has to be on the C drive.

Thank you Ender. Adding -novr to launch options worked.