This has happened again. This time, however, the saves are deleted as soon as I launch the game. Everything in the saves folder will just completely go missing, not even in the recycle bin. Here is my mod list. *Unofficial Fallout 4 Patch.esp *FAR.esp *killmove-100.esp *CustWeapNames.esp *DOOMThatGun.esp *M14.esp *m16servicerifle.esp *Yona_Weapon_DefenseGun.esp *No Seeker Boulders.esp *VatsOverThere_IncreasedVATSRange_AimIncreaseHigh.esp *LegendarySpawnNormalQuarter.esp *NoCraftingExperienceAutomatron.esp *3PercentBase.esp *yace_LevelCap50.esp *No Mess.esp *Quieter Settlements - Recommended Settings.esp *PowerWaterCustom.esp *SettlementAttacksBeyond.esp *SettlementAttacksBeyondFH.esp *No More Sanctuary Dead Dog and Raider - They never existed 1.1.esp *SanctFixedBridge.esp *IMG_Castle_Wall_Patches.esp *Scrap Everything - Core.esp This time I only had 2 save files in my folder, and I made sure not to ever quicksave or load the exit save, and I never saved over a file. I would just create a new save each time and then delete after I saved again successfully. Does anyone know what causes this? I'm running on Windows 10 x64 with an i7 and a GTX 980. I have an SSD with about 300GB of free space left. 16GB of RAM. I don't get CTDs, but for some reason this is happening. I'm running on 1.8.7 with the 11/14/16 version of UFO4P, and my Nvidia driver was updated yesterday. Is Steam the cause, perhaps? I remember hearing that mods downloaded onto consoles from Bethnet could corrupt save files, but I download all my mods from Nexus and install manually following the guide on manual installs. The only Bethnet mod I have is the M16 Service Rifle, but I made sure to download the PC version. I'm also suspecting it could be the Castle Wall Patches mod, but I thought that one only corrupted save files on Xbox back when that mod was stolen and uploaded to Bethnet. This sucks.