Radar It's a game bug to which there's no solution yet.
If that's a savegame you can salvage by going back to 0.15.10 or earlier I think and use old Abh versions.
If it's a ship file you can salvage it by loading the ship directly into blueprint mode.
The biggest problem is when you set them to mine mode and save with that mode on. If you switch to other modes before saving it will be fine. Other similar cases with savegames use the methodes above. Good luck.