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Simutrans Extended => Simutrans-Extended bug reports => Simutrans-Extended development => Simutrans-Extended closed bug reports => Topic started by: Rollmaterial on September 19, 2026, 04:16:18 PM

Title: Freezing after loading large save
Post by: Rollmaterial on September 19, 2026, 04:16:18 PM
Shortly after loading the save linked below, the game freezes. It has been very unresponsive upon loading for a while already, but pausing immediately then letting it run in fast forward for a couple of IRL hours did the trick until Thursday. Since then, the game freezes completely a few seconds after loading.

https://drive.google.com/file/d/1SVVJj138TS-GRzr9pgWr7kw5YcXQV4G2/view?usp=sharing
Title: Re: Freezing after loading large save
Post by: jamespetts on September 20, 2026, 09:48:04 AM
Quote from: Rollmaterial on September 19, 2026, 04:16:18 PMShortly after loading the save linked below, the game freezes. It has been very unresponsive upon loading for a while already, but pausing immediately then letting it run in fast forward for a couple of IRL hours did the trick until Thursday. Since then, the game freezes completely a few seconds after loading.

https://drive.google.com/file/d/1SVVJj138TS-GRzr9pgWr7kw5YcXQV4G2/view?usp=sharing
Thank you for the report - I think that this is now fixed. Please check the latest CI builds or to-morrow's nightly build for the fixed version. 
Title: Re: Freezing after loading large save
Post by: Rollmaterial on September 20, 2026, 10:26:28 AM
Now it won't load at all and shows an "Incompatible saved game. Cannot load file." message.
Title: Re: Freezing after loading large save
Post by: jamespetts on September 20, 2026, 10:27:21 AM
Quote from: Rollmaterial on Yesterday at 10:26:28 AMNow it won't load at all and shows an "Incompatible saved game. Cannot load file." message.
Can I check which version that you are using?
Title: Re: Freezing after loading large save
Post by: Rollmaterial on September 20, 2026, 10:37:09 AM
#67f5cd1, pakset #7215850
Title: Re: Freezing after loading large save
Post by: jamespetts on September 20, 2026, 11:24:01 AM
Quote from: Rollmaterial on Yesterday at 10:37:09 AM#67f5cd1, pakset #7215850
That is very odd - I cannot reproduce this locally. Where did you get the binary and what OS are you using?
Title: Re: Freezing after loading large save
Post by: Rollmaterial on September 20, 2026, 11:42:43 AM
I have tried several CI artifacts on Windows 11
Title: Re: Freezing after loading large save
Post by: jamespetts on September 20, 2026, 12:05:46 PM
Can I check that you are using the original saved game that you posted here not one resaved later than that?
Title: Re: Freezing after loading large save
Post by: jamespetts on September 20, 2026, 12:16:25 PM
The AI has found that the CI builds are currently not built with zstd support, and your game is compressed with zstd. The Bridgewater-Brunel binaries (https://bridgewater-brunel.me.uk/downloads/nightly/windows/) should work with zstd and carry the fix to your saved game problem. I am reconfiguring the CI builds to use zstd now.

Edit: Having checked, the Bridgewater-Brunel binaries do not yet contain the fix: they should work to-morrow. The CI binaries should soon work, however. Apologies.
Title: Re: Freezing after loading large save
Post by: Rollmaterial on September 20, 2026, 12:59:04 PM
The CI works. Thanks!
Title: Re: Freezing after loading large save
Post by: jamespetts on September 20, 2026, 12:59:56 PM
Quote from: Rollmaterial on Yesterday at 12:59:04 PMThe CI works. Thanks!
Excellent! It should be a bit faster, too, as we have a new optimisation.
Title: Re: Freezing after loading large save
Post by: Rollmaterial on September 20, 2026, 01:02:11 PM
And the game runs smoothly from the beginning, too!