What goes wrong most often, what it actually means, and what to do about it. Most of these are setup or how the game streams maps, not faults — and the message on screen usually names the fix.
Installation and Access#
The console keeps printing add_ace lines every 10 seconds
One of the five add_ace resource.qs-mlocreator command.* allow lines is missing, so the script cannot start the maps it builds and every build is refused. Paste the lines it prints into the server console — the warning stops at once — and add them to server.cfg so they survive a restart. See Installation.
The resource does not start at all
OneSync is off, or ox_lib / oxmysql are missing or start later. Turn OneSync on and move ensure [mlocreator] below them and below your framework.
"You do not have permission to open MLO Creator"
Your character does not pass the admin rule: group admin/superadmin on ESX, god/admin on QBCore and Qbox, ACE command standalone. Check which framework the console printed at start — if it says standalone on an ESX server, your framework started after MLO Creator.
/mlocreator does nothing
The command is registered only once the server has sent its settings, so wait a few seconds after joining. If you renamed the command in Settings, the old name stops working after restart qs-mlocreator and the new one starts working only then. An empty command name registers no command at all.
I changed the command or a key and nothing happened
The command, the open key, the cursor key and the flush key need restart qs-mlocreator. Players who already bound a key in FiveM's own key bindings keep their own choice.
My projects are gone after an update
Projects live in the database and are never touched by an update. If they are missing, the server is pointing at another database, or [maps] / qs-mlocreator-data were replaced with the download. Restore them from your backup; editor projects based on a .ytyp file cannot be opened without qs-mlocreator-data.
Building and Loading#
The build finished but the world did not change
Nobody pressed E at "Your confirmation is needed". Only a real key press lets the game reload its streaming, so the build waits for it. If it asks a second time, press again.
"XML written. The map was not built — the encoder is unavailable on this server."
The built-in encoder that writes binary game files could not load, usually because files of qs-mlocreator are missing or were changed. Replace the resource with a fresh download from the CFX Portal and restart.
"Another update is already running"
Only one build runs at a time across the whole server. Wait for the other one to finish — a build gives up on its own after two minutes at most.
Players are kicked with "The map is being updated"
New connections are turned away during a build so nobody loads a half-written map. They can reconnect a few seconds later. On a busy server, use Files only — skip the live reload and let the map load with the next restart.
After a build my character is on a default ped
No supported appearance script was found to put the clothes back. See Integrations to add yours to reloadSkin.
"This client could not register its interior. Reconnect to walk into it."
That one player's game did not pick up the new interior in time. The map is fine; a reconnect loads it.
My changes to files in [maps] disappeared
Every build rewrites its map resource, fxmanifest.lua and doors.lua included. Change the project in game instead.
Collision Cutter#
The start screen says "No collision server"
The game server cannot reach the collision server in Settings → Collision viewer. Check that outgoing HTTPS is allowed by your host's firewall and that the address is the default https://collision-server.quasar-store.com.
The whole wall was removed instead of the door
The game modelled that wall as one piece. Put it back, then use Ctrl + click for a door-sized box or G for Corners mode. Only the box is cut.
I built the cut but I still hit a wall
Press Why is nothing cut? in the panel: it checks each box. Usually the box is switched off, too small, or the "Takes" mode is "Only what fits inside" while the wall pokes out of it. Try "Clip at the edge".
"That is not this project's ground"
Cut projects belong to a 200 m area. Close the tool, walk to the new building and open it there; it starts or continues the right project for that spot.
MLO Creator and MLO Editor#
The interior shows missing or checkered textures
qs_mlotextures is not running. It is part of the download and starts with ensure [mlocreator]; every interior you build points at it. Do not rename or delete it.
The build is blocked: no exit portal, unreachable room or too many rooms
Every interior needs at least one door or window to the outside, every room must connect to it, and an interior holds at most 31 rooms. Open the Checks tab in Rooms & Portals — most problems have a one-click fix — or press Show me in the finish dialog.
I cannot walk into my interior
The entrance was placed inside another MLO or on a wall that is still solid. Place the entrance on a real outside wall, and cut that wall open first with the Collision Cutter if the game keeps it closed.
The doorway in my interior does not open
The MLO Creator makes openings, not working doors. Place the door in the MLO Editor's Doors mode. A door leaf baked into the shell with "Static leaf" closes the doorway for good.
"That project has no map resource yet"
The MLO Editor dresses an interior that already exists in the world. Build it once in the MLO Creator, then export the dressing.
"Base is not anchored — positions would be wrong"
The editor does not know where the interior stands yet. Walk inside it until "MLO located" shows, or use Locate from interior in Rooms mode.
Some props vanish after the export
They had no room and landed in limbo, which the game does not draw. The export warns with a count; set their room in the selection card or leave it on Auto inside a room.
A second admin cannot open my project
Only one person edits a project at a time. Close it on your side first.
YMAP Creator and Occlusion#
My parked cars never appear
The game spawns them under its own rules: approach from more than about 250 m, with the normal camera (no noclip or spectate), not while looking at the spot, and inside the hours the spot allows. Teleporting next to it shows nothing. /qs_mlocreator_cargens in F8 lists the spots and whether their models are loaded.
Props are missing for other players
Their priority is set to Optional. In multiplayer the game only builds Required props unless "Is fixed" is on. Set the priority back to Required.
My LOD lights never show up
They are for distance and only between 19:00 and 07:00 game time. Up close the game shows the prop's own lights instead; walk away at night and they appear.
Things behind a window or fence disappear
An occluder covers it. The game trusts occluders completely and hides everything behind them, glass included. Keep occluders a little inside solid walls.
The Occlusion tool is missing from the studio
It is experimental and off by default. Turn it on in Settings → Tools, or use the YMAP Creator's Occlusion mode, which needs no switch.
Still stuck? Open a ticket and include your server console from the start, the F8 output of
/qs_mlocreator_worldstate, and the name of the project.