As per title. After updating Win8.1 today I started getting this error when attempting to save a GIF. The only reference to this error on google says not to use special chars in your destkop path. There are only normal chars in my desktop path, so that can't be the issue. Anyone else seen this? It was working fine until I updated Windows. I also tried running as admin, but still no joy. This is the entry in config.txt:

// Desktop for saving screenshots etc. Defaults to $HOME/Desktop
desktop_path

edit: actually, I noticed something - when I replace desktop_path with a path that exists, save, then load pico-8, it gets overwritten with desktop_path. Maybe a bug?

You have to close all running instances of pico8 before editing and saving the config file. It is not following the common pattern of «general preferences in config file, temporary overrides on command line», but overwrites the config file when closing (so for example if you go full screen to play a game and quit, next launch will use full screen instead of your preferences).

Thanks, that seems to have fixed it.