The Powder Toy

Version 59.1 Released!    Version 59.1 2026-07-07  Officially update to 100.0, including the rest of the changes between the beta and releaseFix latest version of tptmp being unsupport...

We figured it out on IRC, apparently that bug is caused by tptmp. If you're connected to a tptmp room, the save breaks after opening the comments.

@velsuki (View Post)  Seems very unlikely that opening the comment section would break it. Maybe it broke by coincidence at the same moment.

Can you post links / save ids for some of the broken saves? We can check them. Version 100.0 doesn't have many breaking changes so the vast majority of saves should be fine. There could be a bug...

There's a new update out (version 1.23). Does it fix the issue for you?

@velsuki (View Post)  Great! Thanks for testing.

@NF (View Post)  Skylark's version of the game is available here, repacked in a modern format:    https://powdertoythings.co.uk/OldPowder/

@velsuki (View Post)  I'm just curious about this bug.    Basically, does it give a 600 error when you try to view online saves?

@AerospaceFan (View Post)  Did the old build (1.22 / 129) have that problem? I'm not seeing it on my end. What Lua scripts are you using?

I wouldn't be shocked if some specific ancient version of TPT used the version header for something else, where 230 was an accepted value. The version field in saves used to be used for "nu...