# Troubleshooting
This page covers common issues with SEMusicBoxMaker, NordVader Synced Music Player, and compatible music packs.
## The player shows no tracks
Check:
— The music pack mod is added to the world/server mod list.
— NordVader Synced Music Player is also added to the same world/server mod list.
— The music pack was generated or refreshed with SEMusicBoxMaker.
— `Write / Refresh Track Durations + Provider` was run after the last changes.
— The music pack contains sound definitions.
— The audio files are present.
— The paths in the definitions match the real files.
## Artists or albums are missing
Check:
— `Organize as Artist / Album / Track` was enabled during import.
— Tracks have Artist and Album metadata.
— The metadata provider was refreshed.
— The pack is not using a flat folder structure.
— The player terminal list was refreshed.
## Track names include the artist name
Use SEMusicBoxMaker:
«`text
Bulk Rename -> Remove artist prefix
«`
Correct:
«`text
Artist: Kino
Title: Gruppa krovi
«`
Wrong:
«`text
Title: Kino — Gruppa krovi
«`
## The thumbnail does not appear in Space Engineers
Check that the root of the mod contains:
«`text
thumb.jpg
«`
Do not use only:
«`text
temp.jpg
thumbnail.png
cover.jpg
«`
Recommended image size:
«`text
1024×1024
«`
## Some players see the track change but do not hear sound
This is usually a local playback issue on that client.
The player mod uses recovery and resync logic, but logs are still useful for debugging.
Client log location:
«`text
%APPDATA%SpaceEngineersSpaceEngineers.log
«`
Look for lines containing:
«`text
NordVaderMusicBlock
sync
play
recovery
Exception
MOD_ERROR
«`
## The custom player UI does not appear in the block terminal
Check the Space Engineers log for:
«`text
NordVaderMusicBlock
Script loaded
Exception
MOD_ERROR
«`
If the script fails to compile or load, Space Engineers will show only the vanilla SoundBlock terminal UI.
## SEMusicBoxMaker build errors
If the project has both WPF and WinForms enabled, type names can collide.
Common ambiguous types:
— `TextBox`
— `Button`
— `CheckBox`
— `DragEventArgs`
— `MouseEventArgs`
— `KeyEventArgs`
— `Point`
Fix by using explicit WPF aliases or fully qualified type names.
## Safe reset for local mod testing
For local testing, fully close Space Engineers, then replace the local mod folder:
«`text
%APPDATA%SpaceEngineersModsNordVaderSyncedMusicPlayer
«`
Then restart the game and check the log.