Troubleshooting

Verified: March 2022 - TM:PE 11.6.5.2

Check the Compatibility Report first

About 50% of the error reports we get are due to old / broken / incompatible mods. The Compatibility Report mod is the fastest way to find known problems with your mods - it's a collaboration between end-users and mod developers to help navigate the vast array of mods that are out there.

Known bugs

We have replicated the following bugs and have temporary workarounds:

• #277 (vanilla game bug): Vehicles despawning near recently altered roads or rails
  • Caused by a bug in vanilla game which CO are investigating
  • How to fix - see: How to remove ghost nodes and broken nodes
• #273 (vanilla game bug): Tourists unable to leave via 2-way outside connections
  • Try the Crazy Tourists Fix mod
• #244: Changing roads (adding junctions, upgrading, etc) breaks nearby transport routes.
  • Caused by Network Extensions 2 (NExt2)
  • How to fix - replace NExt2 roads with normal road asset replicas: How to remove workshop networks

Tip: Our feature documentaion pages often have an "Issues" link at the bottom which will display currently known problems and ideas for that feature.

General

• How to remove workshop networks -- Roads, tracks, MOM, NExt2, etc.
  • RON - Replace Our Networks mod is highly recommended
• Mods:
  • Incompatible Mods (mods that are incompatible with TM:PE)
  • Online list of game breaking mods
  • Recommended Mod Substitutions -- our recommendations
• Assets:
  • Broken: Roads, Vehicles, Buildings, Props, District Styles
  • Vehicles: Vehicle LODs are flashing, Shiny Black Vehicle LODs
  • Notes for asset creators, Vanilla capacities
  • Lemonster's List of broken assets and mods (Steam Workshop Collection)
• How to remove ghost nodes and broken nodes
• How to move the game to a different disk drive

Where did "Error Messages" section go? I've moved it to bottom of page as none of those errors are caused by TM:PE.

Content manager / Mod options / Settings

• TMPE mod options lost (or not saving/loading) in the mod options screen
• Subscribed mod not showing in game
• No Enable button in Content Manager
• Mods missing in Content Manager (also applicable to assets)
• Road and Rail customisations lost (lane arrows, traffic lights, restrictions, etc.)

Public transport, and Cargo trains

• Allow Intercity Trains button not working
• Broken transport routes
• Busses are using weird routes
• Busses not spawning from depots -- may also be applicable for tracked vehicles
• Cims not using public transport
• Cims wait for taxi in middle of road
• Intercity buses not working
• Problems routing tracked vehicles - trains, metros, trams, monorail
• Regional passenger trains not visiting city
• Tracked vehicles not routing or spawning -- trains, metros, monorails, trams
• Train network clogged with near-empty cargo trains
• Transport vehicles stuck on boarding

Services

• Vehicle Count Flickering Between 1 and 0 -- most commonly seen on service buildings, but can also affect industries, etc.
• Hearses not Spawning - dead people not being collected
• Helicopters and trucks from wrong depots - eg. fire helicopter spawns from a road-based fire station, or trucks spawning from helipads

Cims / Vehicles / Outside connections

• Cims stuck at crosswalks
• How do I turn off dummy traffic -- the 'fake' traffic that just drives in and out of city
• Industry and Commercial vehicles not working
• Industry resources collection and delivery issues
• Intercity buses not working
• Floating cyclists and discarded bicycles
• Floating vehicles
• Outside connections not working
• Population stuck at 0
• Red cars everywhere
• Vehicles not spawning -- industry, services, public transport

Roads & Tracks

• Cars driving through red traffic lights
• Change which side traffic drives on
• "Blue Void":
  • Blue void showing near roads - also applies to paths, tracks, etc.
  • Blue void roads or tracks - usually after placing buildings that contain road/tracks
  • Section of road becomes blue void - often happens after renaming a road / changing route
• Bulldozing road causes vehicles to despawn nearby
• Flickering blue road building guides
• Flying Trees
• Lane arrow and connector not loading
• Road LODs look ugly or glitching - can also cause massive "terrain spikes" on the map
• Road texture flickers, or terrain showing through roads - also applies to paths, tracks, etc.
• Roads United Core - can break toll roads
• Terrain and Roadside Grass Turned White
• Toll Booths not working
• Traffic on highways not behaving properly
• Vehicles driving over medians
• Zoning not working on roads

UI (User Interface)

• Buttons missing in asset editor
• Clicking button makes text dissapear
• Electricity lines and water pipes missing
• Interface text missing (usually on the timed traffic lights panel)
• Lane Arrows buttons missing arrows
• Middle Mouse Button Rotation Not Working
• No audio
• Policies panel missing
• Road names distorted
• TMPE overlays not showing

Recently Fixed Bugs

These issues should now be fixed (if not, let us know):

• Traffic lights turning white - BP fixed the "More Flags" mod in August 2019
• Mod options screen not showing properly
• Options screen showing wrong options for selected mod
• #259: "Looking for parking" infinite loop / vehicle stuck in road looking for parking
• #225: Lane changes at toll booths - fixed in TM:PE v10.21
• #817 (Linux/Mac): Game crashes while loading, or stuck on pause after loading.

Error messages

None of these are caused by TM:PE but we list them here as it's useful resource for anyone ecountering them.

• boost filesystem path
• ArgumentException An element with the same key already exists in the dictionary
• ArgumentNullException Argument cannot be null
• Could not get memory for large allocation - not enough RAM or pagefile!
• Could not load global config System.TypeLoadException
• Could not load type TrafficManager.Geometry.Impl.SegmentGeometry
• Could not load type TrafficManager.Traffic.Data.VehicleState
• Exception BuildingInfo ..._Data failed - and also Custom Assets: ..._Data: NetInfo missing
• Field .PathUnit.m_vehicleTypes not found System.MissingFieldException
• FileNotFoundException Could not load file or assembly 'TrafficManager'
• FormatException Invalid Image Format
• GetColors() format not supported System.NotImplementedException
• InitD3D11RenderColorSurface (VR Device)
• Invalid list detected
• KeyNotFoundException The given key was not present in the dictionary
• Object reference not set to an instance of an object
  • Sometimes it might say NullReferenceException (same error, just logged differently)
  • See also: Ploppable RICO errors
• Simulation error Array index is out of range
• Simulation error Cannot cast from source type to destination type
• Simulation error Division by zero
• Simulation error EndDeserialize(GameAreaManager) tag mismatch
• Simulation error Object reference not set (RoadBaseAI.CanEnableTrafficLights)
• Simulation failed Deserialisation tag mismatch
• System.ArgumentNullException '' with 1 arguments
• System.IO.IOException which might be shown as:
  • System.IO.IOException: Sharing violation
  • System.Reflection.TargetInvocationException
• System.IO.IOException Win32 IO returned 112
  • On screen, you might see something like The Mod ... [.dll files] has caused an error
• System.StackOverflowException (also sometimes without the System. bit)
• System.Reflection.TargetInvocationException TMPE.log is denined - or any other TMPE.log error
• The class PropVehCount.PropVehCount could not be loaded
• Look rotation viewing vector is zero - triggered by Vehicle Effects mod? Causes in-game lag due to log file spamming during gameplay.