My 10yo daughter found this bug, so I'm reporting it on her behalf 8-)
How to reproduce:
Setup: Minetest 0.4.15, running on Windows 7/64-bit, german.
Start game, singleplayer, "new", worldname Gummib盲rchen
( sigh ).
Create.
So far so good. "Play". click. Crash:
So it looks like we've got a filename-character encoding issue here:
anything else I could provide ?
I like how you had to pretend that your daughter found it just because you named your world Gummib盲rchen (there was no need to be ashamed)
As a solution, I guess encoding the world name with some encoding like in URLs should keep backwards compatibility and allow unicode characters in world names.
Duplicate of #3588
Most helpful comment
I like how you had to pretend that your daughter found it just because you named your world Gummib盲rchen (there was no need to be ashamed)