Just got this reproducible crash when trying to edit a blueprint after using the Picker Blueprinter mirror function

Error while running event Edit-Blueprints::on_gui_click (ID 1)
LuaEntity API call when LuaEntity was invalid.
stack traceback:
Edit-Blueprints/control.lua:197: in function 'build_blueprint'
Edit-Blueprints/control.lua:564: in function 'enter_blueprint_editing'
Edit-Blueprints/control.lua:751: in function <Edit-Blueprints/control.lua:747>
stack traceback:
[C]: in function 'index'
__Edit-Blueprints/control.lua:197: in function 'build_blueprint'
Edit-Blueprints/control.lua:564: in function 'enter_blueprint_editing'
Edit-Blueprints/control.lua:751: in function <Edit-Blueprints/control.lua:747>

Could you please send me the blueprint string? I didn't manage to reproduce it. Also, are you using latest version 0.1.3?

Here is a link to the flipped blueprint https://pastebin.com/ps9DDZ9t, and yes I'm using 0.1.3

Thanks! That crashes for me too. I'll look into it.

Done! Should be fixed with version 0.1.4. As I suspected, it was the rotated trains caused by the flipper. Maybe it would be a good idea to ask Nexela if the flipper could also handle train rotation.