Problem details:
beatmapsets/890438#osu/1861487

There is this map where are additional difficulties but all the files are just (.osu) format and I can't open them in the game and when I try it just shows this error message:

https://imgur.com/a/oUh9kKl



osu! version: Stable 20250401.2 (latest)

You have to put them on the same folder of the submitted map, just select the submitted difficulty then open the editor and File -> Open Beatmap Folder

- Marco - wrote: 3b2gu

You have to put them on the same folder of the submitted map, just select the submitted difficulty then open the editor and File -> Open Beatmap Folder

It worked many thanks :3