I'd describe it this way:

[0.15.15] Crash on clicking Signals tab

Easily reproduced:

Start game.
Start a sandbox scenario.
Place a chest and stack inserter; wire them together with green wire.
Open the stack inserter UI.
In the comparison section, click the right-hand value.
Select the Signals ...

Easily reproduced!

Start game.
Click Play.
Click Scenarios.
Select base/sandbox, click Create.
Click Mod Settings button. Game will crash.

Ran into this when attempting to reproduce the Signals Tab UI crash.

Long time Factorio player here (June, 2014).

The GUI changes look great!

If the key bindings for the Character, Logistics, and Crafting tabs can be changed, then I don't care that they default to F1-F3. I'll just remap them (I remap extensively for most games).

Twinsen wrote:
Factorio must be ...