Save games cannot be loaded after the update from v1.12 to 1.13

[Brody]

Hello,

i ask for Help.

I updated from v1.12 to v1.13 using the tdm_installer.

After the update, however, I can't load any save game, regardless of the mission.

I always get the message that the save game cannot be loaded due to a different version number. The only option is to restart the mission from the beginning.

The save games are build 10651, and the update is build 10946.

[chakkman]

You surely mean that you updated from version 2.12 to 2.13.

I don't think savegames from an older version are compatible with a newer version. I think you're out of luck.

[Brody]

Hi,

I actually meant update 2.12 to 2.13.

I apologize for the typo.

[STRUNK]

@Brody
You can go to the tdm_installer.exe again and select "Get custom version" and select "release212" to roll back to 2.12.
Your savegames you made in 2.12. should work again.
You could even install tdm 2.13 in a new directory to download and play missions that require 2.13. 

[thebigh]

Save games are not backwards-compatible, unfortunately. We usually suggest finishing missions you've started before upgrading to the next version.

[Brody]

9 hours ago, thebigh said:

Save games are not backwards-compatible, unfortunately. We usually suggest finishing missions you've started before upgrading to the next version.

I already made a Backup of the Full 2.12 Folder, so i can still play them on this Installation.

The possibility that the tdm_installer is used as an update rather than for a clean install is certainly to be expected; this possibility is even mentioned during the installation.

So I would like to suggest that the fact that existing FM saves cannot be used in this case should be pointed out, so that the installer can decide accordingly instead of being surprised.

Best regards

[datiswous]

Yeah I think the installer should warn about this.

 

Edited September 25, 2025 by datiswous

[freyk]

Dont blame the installer, blame TDM. (How did other idtech4 engines fixed this issue?)

Edited September 25, 2025 by freyk