Does MyTraffic X work with FSX on Windows 11, and how do I fix paint-number warnings?

Yes. MyTraffic X can run with boxed FSX and FSX: Steam Edition on Windows 11, but its ageing installer and configuration tools may not detect modern paths correctly. Install it into the active FSX folder, verify its scenery and SimObjects entries, then repair duplicate or misnumbered [fltsim.X] sections in each flagged aircraft.cfg file.

Will MyTraffic X run on Windows 11?

Windows 11 is not itself a barrier to MyTraffic X, provided FSX already runs correctly. The usual failures come from the add-on being installed into the wrong FSX copy, Windows blocking changes under Program Files, or an old installer configuring boxed FSX when the user launches Steam Edition.

Release differences matter because MyTraffic X existed in several builds, some produced before Steam Edition. Our guide to using older FSX add-ons with Steam Edition explains the path and external-tool issues in more detail.

How should MyTraffic X be configured in FSX?

A working installation needs three separate elements: accessible aircraft models, an enabled scenery or traffic layer, and active AI traffic settings.

1. Confirm the active FSX folder. MyTraffic should sit within the FSX installation selected by the shortcut or Steam installation you actually launch. A common mistake is creating an extra nested folder such as FSX\FSX\MyTraffic.
2. Check the aircraft search path. In the active FSX configuration file, the [Main] section normally needs a uniquely numbered entry resembling SimObjectPaths.n=MyTraffic\Aircraft. Use the next available sequence number and adjust the path if your MyTraffic release stores aircraft elsewhere.
3. Check the Scenery Library. Enable the MyTraffic scenery area and point it at the folder immediately above the relevant Scenery subfolder. An installer reporting success does not prove that it added the layer to the edition being launched.
4. Enable AI traffic. Set the airline traffic slider above zero. General aviation traffic is controlled separately, and low density settings may produce little activity at smaller airports.
5. Restart FSX. FSX reads aircraft definitions and traffic databases during start-up, so configuration changes may not take effect until the simulator has been closed fully and reopened.

If the installer cannot find FSX, puts files in the wrong directory or cannot save its settings, follow our FSX add-on folder and permissions checks before editing aircraft files.

How do I fix MyTraffic X paint-number warnings?

A paint-number warning normally means that one aircraft's aircraft.cfg contains duplicate or malformed [fltsim.X] section numbers. The number belongs only to that configuration file; having [fltsim.0] in every different aircraft folder is normal.

1. Close FSX. Note the aircraft or configuration file named in the warning.
2. Back up the file. Copy the affected aircraft.cfg somewhere safe before changing it. If it is under Program Files, use an elevated text editor or copy the corrected file back with administrator approval.
3. Inspect every paint section. Look for headers such as [fltsim.0], [fltsim.1] and [fltsim.2]. Two sections bearing the same number are invalid. Gaps can also confuse older tools, so sequential numbering is safest.
4. Renumber the headers only. Starting at zero, number the sections consecutively in their existing order. Do not change title=, sim=, model=, texture= or parking-code values merely to fix a paint number.
5. Save it as a CFG file. Preserve the plain-text format and make sure the editor has not created aircraft.cfg.txt.
6. Restart and test. Repeat the process only for files named by subsequent warnings.

For example, two blocks both headed [fltsim.4] should be renumbered according to their position, while leaving the contents of each block intact. Our explanation of the aircraft.cfg repaint structure is useful when the warning began after adding or copying a livery.

If dozens of warnings appeared after an update or reinstall, do not hand-edit the entire fleet immediately. That pattern usually means two MyTraffic versions have been combined, an old aircraft folder remains active, or a patch was applied to the wrong base release. Restore a clean matching installation and its original configuration files first.

What if FSX reports a duplicate title instead?

A duplicate title= warning is a different fault, and renumbering [fltsim.X] will not correct it. Search the active aircraft folders for both entries using the reported title, then remove an accidental duplicate folder or correct the user-added repaint.

Do not casually rename the title of an original MyTraffic aircraft. Compiled traffic schedules identify aircraft through those title strings, so changing one can make scheduled traffic disappear. Restoring the correct MyTraffic file is safer than inventing a replacement title.

Why is MyTraffic installed but no AI aircraft appear?

No traffic usually means FSX cannot see the aircraft or traffic database, rather than a Windows 11 graphics problem.

• Confirm the SimObjectPaths entry points to the directory containing the MyTraffic aircraft folders.
• Make sure the MyTraffic scenery area and its traffic BGL files are active in the edition being launched.
• Raise the airline traffic slider temporarily while testing at a large airport and a busy local time.
• Remove or temporarily disable old FS2004-format traffic BGL files elsewhere in active scenery; a legacy traffic file can interfere with FSX-format schedules.
• Resolve configuration warnings, because FSX can disable the affected paint entry and leave schedules without a matching aircraft.

Why do MyTraffic aircraft appear white or textureless?

White, black or unpainted aircraft are texture faults, not paint-number faults. Check that each texture= value names an existing texture folder, that required texture files and fallbacks are present, and whether disabling FSX's DirectX 10 Preview changes the result for older AI models.

Renumbering [fltsim.X] cannot replace missing paint files. Use our missing-texture checks for FSX aircraft when the warning has gone but the livery still does not render.