Factorio Forums

I'm having an issue loading games from 13.20 under 14.20.

This issue only appears with saves from 13.20; Earlier versions load fine.

I have attempted removing mods, but it appears to be an issue with a built in save migrator for the basemod.

The error message is as follows;

Error while applying migration: Base Mod 2014 01 28_Factorio_0.9.lua

Cannot Execute Command Error: [strong "if game.is_demo() then..."]:5:attempt to indext field 'player' (a nil value)

Any suggestions?

Cache verifies successfully; The error persists across multiple savegames on multiple maps, both modded and unmodded.

See this topic: viewtopic.php?f=11&t=29110

The game tries to run a migration script used for migration from Factorio 0.9.0, but that migration script shouldn't be available in your installation anymore.

The solution is to go to your Factorio installation directory (Program Files\Factorio\data\base\migrations or Steam\SteamApps\common\Factorio\data\base\migrations) and delete all migration files older than 0.11.0.

Cheers Daniel, issue resolved.