Troubleshooting
DSMapStudio Troubleshooting Guide
DSMapStudio Troubleshooting Guide
Nearly every DSMapStudio problem is one of a handful of recognizable failures — won't open, no .exe, empty Param Editor, "Unknown DCX format," black Map Editor — and none of them are random. Each has a specific cause and a specific fix, so match your symptom below instead of guessing or reinstalling. Run the five basic checks first; they resolve the majority of "it's broken" reports on their own.
Find your problem
| Symptom | Likely cause | Fix |
|---|---|---|
| Won't open, no window | Missing Visual C++ x64 / .NET 7 runtime | DSMapStudio won't open |
No DSMapStudio.exe after extracting | Downloaded source code, not the release | No .exe found |
| "Unknown DCX format" on a file | Game patched past what your version reads | Unknown DCX format |
| Map Editor viewport is black | GPU lacks Vulkan (Intel integrated) | Intel GPU / Vulkan |
| Crashes after launching | Antivirus, stale config, or GPU init | DSMapStudio won't open |
Crashes on Ctrl+D duplicating an enemy | Known data-specific bug | Crash duplicating enemies |
| Param Editor empty / rows nameless | Packed files, wrong Game Type, or a filter | Params not showing |
| "Invalid game executable" | Wrong game directory or Game Type | Invalid game executable |
| On Linux | Needs Wine 9.0+ with runtimes in the prefix | Linux / Wine |
| Edits don't appear in-game | ModEngine2 not configured | Quick fixes |
Before anything — the five basic checks
A large share of "DSMapStudio is broken" is one of these. Run them first:
- Right release. v1.11.1, downloaded as
DSMapStudio.zipfrom the Releases assets — not the "Source code" zip, which has no.exe. - Runtimes installed. Visual C++ x64 Redistributable and .NET 7 Desktop Runtime. Missing either → it won't open at all.
- Game unpacked. DSMapStudio reads UXM-unpacked files (UDSFM for Dark Souls: PTDE), not the packed Steam install. Packed files → empty Param Editor.
- Game Type matches the game. A leftover type from a previous project makes every value read as garbage.
- Patch is supported. v1.11.1 can't read Elden Ring 1.12+ (post–Shadow of the Erdtree) — that's the "Unknown DCX format" boundary.
All five pass and it's still wrong? Find your symptom above. Setup details: installation guide and first project setup.
Quick fixes for other issues
Smaller problems that don't need a full page:
Edits don't appear in-game
If your changes show under the Modified filter in DSMapStudio but not in the game, the problem is ModEngine2, not your edit. Point its config at your project's mod output folder and launch the game through ModEngine2. For Dark Souls 3, launch offline — modded DS3 online risks a soft ban.
"I saved but the game uses the old file"
DSMapStudio writes to your project's output, not into the packed game. The runtime mod loader (ModEngine2) is what feeds that output to the game — if it's pointed elsewhere, you'll edit forever with no in-game change. Same fix as above.
Still stuck? The DSMapStudio GitHub Issues and the Souls Modding Discord are where to report a specific error with your game, patch, and the exact message. If the blocker is simply that your game is too new for v1.11.1, the answer is usually Smithbox — and once unblocked, the Param Editor hub is where most modding actually happens.