I tried a game now with the original slang shaders I had under standard and those still work, but when I pick a shader in the advanced folder, which is where I stored the new ones, overwriting the old ones, I get the failed to load shader preset.
here the log based on opening retroarch instead of going through LB.
[INFO] RetroArch 1.12.0 (Git 840c448)
[INFO] === Build =======================================
[INFO] CPU Model Name: 12th Gen Intel(R) Core(TM) i7-12700KF
[INFO] Capabilities: MMX MMXEXT SSE SSE2 SSE3 SSE4 SSE4.2 AES AVX AVX2
[INFO] Built: Oct 17 2022
[INFO] Version: 1.12.0
[INFO] Git: 840c448
[INFO] =================================================
[INFO] [Input]: Found input driver: "dinput".
[INFO] [Environ]: SET_PIXEL_FORMAT: RGB565.
[INFO] [Core]: Version of libretro API: 1, Compiled against API: 1
[INFO] [Audio]: Set audio input rate to: 48000.00 Hz.
[INFO] [Video]: Set video size to: fullscreen.
[INFO] [XInput]: Found XInput v1.4.
[INFO] [Joypad]: Found joypad driver: "dinput".
[INFO] [D3D12]: Found GPU at index 0: "NVIDIA GeForce RTX 3080".
[INFO] [D3D12]: Found GPU at index 1: "Microsoft Basic Render Driver".
[INFO] [D3D12]: Using GPU index 0.
[INFO] [D3D12]: Requesting 1 maximum frame latency, using 1.
[INFO] [Video]: Found display server: "win32".
[INFO] [XAudio2]: Requesting 64 ms latency, using 64 ms latency.
[INFO] [Display]: Found display driver: "d3d12".
[INFO] [SRAM]: SRAM will not be saved.
[INFO] [Playlist]: Loading history file: "C:\Users\Alexander\LaunchBox\Emulators\RetroArch\content_history.lpl".
[INFO] [Playlist]: Loading history file: "C:\Users\Alexander\LaunchBox\Emulators\RetroArch\content_music_history.lpl".
[INFO] [Playlist]: Loading history file: "C:\Users\Alexander\LaunchBox\Emulators\RetroArch\content_video_history.lpl".
[INFO] [Playlist]: Loading history file: "C:\Users\Alexander\LaunchBox\Emulators\RetroArch\content_image_history.lpl".
[INFO] [Playlist]: Loading favorites file: "C:\Users\Alexander\LaunchBox\Emulators\RetroArch\content_favorites.lpl".
[INFO] [Core]: Using content: "G:\roms\Mame 0.249\vertical\1942.zip".
[INFO] [Core]: Content ran for a total of: 00 hours, 00 minutes, 00 seconds.
[INFO] [Core]: Unloading core..
[INFO] [Core]: Unloading core symbols..
[INFO] [Video]: Does not have enough samples for monitor refresh rate estimation. Requires to run for at least 4096 frames.
[INFO] RetroArch 1.12.0 (Git 840c448)
[INFO] === Build =======================================
[INFO] CPU Model Name: 12th Gen Intel(R) Core(TM) i7-12700KF
[INFO] Capabilities: MMX MMXEXT SSE SSE2 SSE3 SSE4 SSE4.2 AES AVX AVX2
[INFO] Built: Oct 17 2022
[INFO] Version: 1.12.0
[INFO] Git: 840c448
[INFO] =================================================
[INFO] [Input]: Found input driver: "dinput".
[INFO] [Core]: Loading dynamic libretro core from: "C:\Users\Alexander\LaunchBox\Emulators\RetroArch\cores\mame_libretro.dll"
[INFO] [Overrides]: Content dir-specific overrides found at "C:\Users\Alexander\LaunchBox\Emulators\RetroArch\config\MAME\\vertical.cfg".
[INFO] [Config]: Loading config: "C:\Users\Alexander\LaunchBox\Emulators\RetroArch\retroarch.cfg".
[INFO] [Config]: Appending config: "C:\Users\Alexander\LaunchBox\Emulators\RetroArch\config\MAME\\vertical.cfg".
[INFO] [Environ]: SET_VARIABLES.
[INFO] [Overrides]: Redirecting save file to "C:\Users\Alexander\LaunchBox\Emulators\RetroArch\saves\1942.srm".
[INFO] [Overrides]: Redirecting save state to "C:\Users\Alexander\LaunchBox\Emulators\RetroArch\states\1942.state".
[INFO] [Environ]: GET_LOG_INTERFACE.
[INFO] [Environ]: SYSTEM_DIRECTORY: "C:\Users\Alexander\LaunchBox\Emulators\RetroArch\system".
[libretro INFO] SYSTEM_DIRECTORY: C:\Users\Alexander\LaunchBox\Emulators\RetroArch\system
[INFO] [Environ]: CORE_ASSETS_DIRECTORY: "C:\Users\Alexander\LaunchBox\Emulators\RetroArch\downloads".
[libretro INFO] CONTENT_DIRECTORY: C:\Users\Alexander\LaunchBox\Emulators\RetroArch\downloads
[INFO] [Environ]: GET_SAVE_DIRECTORY.
[libretro INFO] SAVE_DIRECTORY: C:\Users\Alexander\LaunchBox\Emulators\RetroArch\saves
[INFO] [Environ]: SET_PIXEL_FORMAT: XRGB8888.
[INFO] [Content]: Content loading skipped. Implementation will load it on its own.
[libretro INFO] Joystick map: disabled
[INFO] [Environ]: SET_INPUT_DESCRIPTORS:
[libretro INFO] Starting game:G:\roms\Mame 0.249\vertical\1942.zip
[libretro INFO] Game name: 1942, Game description: 1942 (Revision B)
[libretro ERROR] System not found: vertical
[libretro WARN] Driver vertical not found -1
[libretro INFO] Creating frontend for game: 1942
[libretro INFO] Softlists: 1
[libretro WARN] Invalid video value opengl; reverting to software
[libretro INFO] SOURCE FILE: ../../../../../src/mame/capcom/1942.cpp
[libretro INFO] PARENT: 0
[libretro INFO] NAME: 1942
[libretro INFO] DESCRIPTION: 1942 (Revision B)
[libretro INFO] YEAR: 1984
[libretro INFO] MANUFACTURER: Capcom
[libretro INFO] RES:0
[INFO] [SRAM]: Skipping SRAM load.
[INFO] [Core]: Version of libretro API: 1, Compiled against API: 1
[libretro INFO] Joystick map: disabled
[INFO] [Environ]: SET_INPUT_DESCRIPTORS:
[libretro INFO] AV_INFO: width=224 height=256
[libretro INFO] AV_INFO: max_width=224 max_height=256
[libretro INFO] AV_INFO: aspect_ratio = 0.750000
[libretro INFO] AV_INFO: fps = 60.000000 sample_rate = 48000.000000
[INFO] [Audio]: Set audio input rate to: 48000.00 Hz.
[INFO] [Video]: Set video size to: fullscreen.
[INFO] [Vulkan]: Vulkan dynamic library loaded.
[INFO] [Vulkan]: Found vulkan context: "vk_w".
[INFO] [Vulkan]: Detecting screen resolution: 3840x2160.
[INFO] [Vulkan]: Found GPU at index 0: "NVIDIA GeForce RTX 3080".
[INFO] [Vulkan]: Using GPU index 0.
[INFO] [Vulkan]: Using GPU: "NVIDIA GeForce RTX 3080".
[INFO] [Vulkan]: Queue family 0 supports 16 sub-queues.
[INFO] [Vulkan]: Got 3 swapchain images.
[INFO] [Vulkan]: Using resolution 3840x2160.
[INFO] [Vulkan]: Using BGRA8888 format.
[INFO] [Shaders]: Specific shader preset found at "C:\Users\Alexander\LaunchBox\Emulators\RetroArch\config\MAME\\vertical.slangp".
[INFO]
[WARN] [Shaders]: Root preset is not a valid shader chain because it has no shaders entry: "C:\Users\Alexander\LaunchBox\Emulators\RetroArch\config\MAME\\vertical.slangp".
[ERROR] [Vulkan]: Failed to create preset: "C:\Users\Alexander\LaunchBox\Emulators\RetroArch\config\MAME\\vertical.slangp".
[INFO] [Joypad]: Found joypad driver: "dinput".
[INFO] [Video]: Found display server: "win32".
[INFO] [XAudio2]: Requesting 64 ms latency, using 64 ms latency.
[INFO] [Display]: Found display driver: "vulkan".
[INFO]
[WARN] [Shaders]: Root preset is not a valid shader chain because it has no shaders entry: "C:\Users\Alexander\LaunchBox\Emulators\RetroArch\config\MAME\\vertical.slangp".
[INFO] [Playlist]: Loading history file: "C:\Users\Alexander\LaunchBox\Emulators\RetroArch\content_history.lpl".
[INFO] [Playlist]: Loading history file: "C:\Users\Alexander\LaunchBox\Emulators\RetroArch\content_music_history.lpl".
[INFO] [Playlist]: Loading history file: "C:\Users\Alexander\LaunchBox\Emulators\RetroArch\content_video_history.lpl".
[INFO] [Playlist]: Loading history file: "C:\Users\Alexander\LaunchBox\Emulators\RetroArch\content_image_history.lpl".
[INFO] [Playlist]: Loading favorites file: "C:\Users\Alexander\LaunchBox\Emulators\RetroArch\content_favorites.lpl".
[INFO] [Playlist]: Written to playlist file: "C:\Users\Alexander\LaunchBox\Emulators\RetroArch\content_history.lpl".
[libretro INFO] Joystick map: disabled
[INFO] [Environ]: SET_INPUT_DESCRIPTORS:
[libretro INFO] AV_INFO: width=224 height=256
[libretro INFO] AV_INFO: max_width=224 max_height=256
[libretro INFO] AV_INFO: aspect_ratio = 0.750000
[libretro INFO] AV_INFO: fps = 60.000000 sample_rate = 48000.000000
[INFO] [Environ]: SET_SYSTEM_AV_INFO: 224x256, Aspect: 0.750, FPS: 60.00, Sample rate: 48000.00 Hz.
[INFO] [Audio]: Set audio input rate to: 48000.00 Hz.
[INFO] [XAudio2]: Requesting 64 ms latency, using 64 ms latency.
[INFO] [Display]: Found display driver: "vulkan".
[INFO] [Input]: Game Focus => OFF
[libretro INFO] ChangeAV: w:224 h:256 ra:0.750000.
[libretro INFO] Joystick map: disabled
[INFO] [Environ]: SET_INPUT_DESCRIPTORS:
[libretro INFO] AV_INFO: width=224 height=256
[libretro INFO] AV_INFO: max_width=224 max_height=256
[libretro INFO] AV_INFO: aspect_ratio = 0.750000
[libretro INFO] AV_INFO: fps = 59.637405 sample_rate = 48000.000000
[INFO] [Environ]: SET_SYSTEM_AV_INFO: 224x256, Aspect: 0.750, FPS: 59.64, Sample rate: 48000.00 Hz.
[INFO] [Audio]: Set audio input rate to: 48291.84 Hz.
[INFO] [XAudio2]: Requesting 64 ms latency, using 64 ms latency.
[INFO] [Display]: Found display driver: "vulkan".
[INFO] [Input]: Game Focus => OFF
[libretro INFO] Joystick map: disabled
[INFO] [Environ]: SET_INPUT_DESCRIPTORS:
[libretro INFO] AV_INFO: width=224 height=256
[libretro INFO] AV_INFO: max_width=224 max_height=256
[libretro INFO] AV_INFO: aspect_ratio = 0.750000
[libretro INFO] AV_INFO: fps = 59.637405 sample_rate = 48000.000000
[INFO] [Environ]: SET_SYSTEM_AV_INFO: 224x256, Aspect: 0.750, FPS: 59.64, Sample rate: 48000.00 Hz.
[INFO] [Audio]: Set audio input rate to: 48291.84 Hz.
[INFO] [XAudio2]: Requesting 64 ms latency, using 64 ms latency.
[INFO] [Display]: Found display driver: "vulkan".
[INFO] [Input]: Game Focus => OFF
[libretro INFO] ChangeAV: w:224 h:256 ra:0.750000.
[INFO]
[WARN] [Shaders]: Root preset is not a valid shader chain because it has no shaders entry: "C:\Users\Alexander\LaunchBox\Emulators\RetroArch\shaders\Mega_Bezel_Packs\Duimon-Mega-Bezel\Presets\Advanced\MAME\MAME_2010-[ADV]-[Guest][CABINET]-[Vertical].slangp".
[ERROR] [Vulkan]: Failed to create preset: "C:\Users\Alexander\LaunchBox\Emulators\RetroArch\shaders\Mega_Bezel_Packs\Duimon-Mega-Bezel\Presets\Advanced\MAME\MAME_2010-[ADV]-[Guest][CABINET]-[Vertical].slangp".
[ERROR] [Vulkan]: Failed to create filter chain: "C:\Users\Alexander\LaunchBox\Emulators\RetroArch\shaders\Mega_Bezel_Packs\Duimon-Mega-Bezel\Presets\Advanced\MAME\MAME_2010-[ADV]-[Guest][CABINET]-[Vertical].slangp". Falling back to stock.
[ERROR] [Config]: Failed saving config to "C:\Users\Alexander\LaunchBox\Emulators\RetroArch\retroarch.cfg".
[INFO] [Config]: Loading config: "C:\Users\Alexander\LaunchBox\Emulators\RetroArch\retroarch.cfg".
[INFO] [Overrides]: Configuration overrides unloaded, original configuration restored.
[INFO] [Core]: Content ran for a total of: 00 hours, 00 minutes, 07 seconds.
[INFO] [Runtime]: Saving runtime log file: "C:\Users\Alexander\LaunchBox\Emulators\RetroArch\playlists\logs\MAME (Git)\1942.lrtl".
[INFO] [Core]: Unloading game..
[INFO] [Core]: Unloading core..
[INFO] [Core]: Unloading core symbols..
[INFO] [Core]: Saved core options file to "C:\Users\Alexander\LaunchBox\Emulators\RetroArch\config\MAME\MAME.opt".
[INFO] [Video]: Does not have enough samples for monitor refresh rate estimation. Requires to run for at least 4096 frames.