There is an XCOS model I’ve been working on over the past few weeks that contains four superblocks representing the fluid properties to figure out the temperature changes across a car radiator. While I was working on it, the main block wouldn’t load when I clicked on it, so I thought I would just close the program and restart it to make sure it’s been working again. Unfortunately, now, when I open the file, nothing loads. It’s as if everything in the file was deleted, yet the 26KB file size at least shows me that something is still there. Has anyone else run into that issue and, if so, is there some sort of way to fix it or, in the very least, a workaround?