When the Windows user's documents folder is located on a network share (most commonly seen in domain environments that are set up that way), game save files are never created. Folder structure is successfully created, and snapshots/announcements.bin are saved fine. It seems to be an issue only with game saves. Game does not crash, it's just a silent fail. I couldn't find any method to work around this issue. Symlinking "My Games" to a local folder doesn't work, presumably because the file path would still include the network share. Manual saves and autosaves behave similarly to one another. 0% of saves were successful.