I came across this issue with loading my carts as .p8 files and I fixed by saving my carts as a .png file. And now I'm having trouble loading .png files too. Before that happened, when I was gonna change my settings using the config.txt, when I opened it up, the text file was empty. If you know how to fix one (or all) of these problems, let me know. Here is the two files that didn't load in to my Pico-8. BTW, I was following a tutorial on how to make a roguelike. Sorry if you run into some problems.

The Collector 1.0

Cart File | Forum Post |

	More cartridges by Rock_bottom157

More Cartridges [View All]

 

The Collector 1.0

by Rock_bottom157

Cart #collector-1 | 2022-01-24 | Code ▽ | Embed ▽ | No License

1

Press O to add multi-player
arrows to move player 1
ESDF to move player 2 (if multi-player is enabled)
Collect the yellow pixel to get a point

Enjoy!