Here your crashlog could be very useful I guess.
And to make sure you don’t lose too much of your progress, you should back up your work regularly.
Here you could follow one of my countless posts about creating a security cushion of backups, so that such a disaster only costs a few minutes of work and not makes you cry:
Sorry, but unfortunately your file can not be restored.
Your swap file is something I can not decipher, but it looks at least for me that it holds valid data, because it doesn’t consist only out of zero’s or one’s. The same is true for your frame-cache, the files are definitely not corrupted because they all follow the same certain structure, vary a little in their size, but nothing in them points to an issue of whatever kind.
Unfortunately they will be worthless without the main file, y…
Please always keep in mind that these are not meant for production use, because these builds exist to hunt down existing bugs before releasing them to the public. Furthermore, there seems to be a misunderstanding that these are not BETA versions. Krita only has BETA versions shortly before the release of new versions if necessary. As far as I understand, what you have just been talking about are pre-ALPHA versions.
But I must admit, these are the most stable pre-versions, no mater if being BETA…
Hello @Chara_Dreemurr and welcome to the forum!
What you can do to create a safety cushion is to activate the setting ‘‘Create a Backup File on Saving’’ in Krita under ‘‘Settings’’ >> ‘‘Configure Krita’’ >> ‘‘General’’ in the ‘‘File Handling’’ tab, you can leave the options ‘‘Backup File Location’’ and ‘‘Backup File Suffix’’ below this as they are or adjust them to suit your requirements, and then specify the number of backups you want to keep under ‘‘Number of Backup Files Kept’…