Friend, whats up!
1) If your other saves loads, then this save in particulary, probably crashes. The save maybe is coorrupted.
2) If you will create a new save and it will load, then this save in particulary, probably crashes. The save maybe is coorrupted.
- What may have happened
If the save it's all 0's, the crash happened in the middle of saving, it 0'd out the save fale and crashed before it could actually save world data (see atached file).
Then, first at all: you need to send your save to the experts, here.
- Well, If your save it will be really corrupted, what will you need to do:
1) to sit and to cry (not necessarily in that order);
2) create a new save and to come to Discord. Friends there can help you to make another improved save more quickly.
- https://discord.gg/astroneer (International);
- https://discord.gg/tyeFQr5e (Brazil);
3) At the future: always you must "duplicate" your save: daily, weekly, ... when it will be necessary.
4) At the future:make a backup and put it in a cloud: googledrive, etc.