90.246 Error MainLoop.cpp:1285: Exception at tick 21103562: The mod Train Log (1.1.3) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event train-log::on_gui_click (ID 1)
flib/gui.lua:147: TabAndContent must have tab and content fields
stack traceback:
[C]: in function 'error'
flib/gui.lua:147: in function 'recursive_build'
flib/gui.lua:155: in function 'recursive_build'
flib/gui.lua:171: in function 'build'
train-log/gui/main_gui.lua:65: in function 'open_gui'
train-log/gui/main_gui.lua:103: in function 'open_or_close_gui'
train-log/gui/main_gui.lua:112: in function 'handle_action'
train-log/gui/main_gui.lua:120: in function <train-log/gui/main_gui.lua:116>

Same here. It renders the mod unusable.

Thanks. At first I thought this was a special case, but when trying it I discovered that it was caused by a breaking change in Flib. I have adapted my code to work with newer versions of Flib and have also marked Train Log to require a newer version of Flib.

TL;DR: Fixed :)

Wow .. it works again. Thanks!

Interesting, sorry that the flib update broke your mod! This was an unintentional break. The TabAndContent stuff was already in there before the update and was the intended method of adding tabs. I didn't realize that before this update it wouldn't throw an error if you tried to do it the "classic" way. I'm sorry for the inconvenience!

@raiguard I actually prefer the new way, which I didn't know existed until you accidentally broke it. All good now.