Hello! I'm new here, and I may post an introduction if there's an introduction thread, but I have an issue with a Krita file right now.

Last night, I began drawing the guidelines (just body and hair) for a a character of mine. I tried opening it today to work on it some more, but and error message on Krita came up saying that it isn't a valid Krita file, even, though it's file is a .kra file. Am I doing something wrong, or is Krita buggy with its file saving? I'm pretty new to this software, so maybe I did something wrong, and if someone could help me out, I'd appreciate it. Thanks!

Krita files are zip files, actually. You can try if a zip file repair tool can access your file. Usually, when there are problems saving files, it's either hardware, or a lack of disk space. The saving code itself is quite robust, where we'll save to a temporary file, and only when that succeeded, copying the temporary file over the target file. But in real life, there are hundreds of ways things can break, I'm afraid.

It happened to me a lot of times (not lately), possible solutions: 1. manually write the .kra extension 2. restart the app 3. check if you are either exporting or saving kra file, it happened a lot to me if i tryed to export to jpg, manually writing a extension would again solve it 4. Update! i think this occured to me with krita 2.8 which is on the ubuntu repositories, i think it got solved in 2.9, 5. try saving to another folder... Hope it helps!