: Check the source where you got the ZIP. Most mods require official DLCs or other "master" mods to work without crashing.
: Unzip the contents of Fallout.zip directly into this folder. Fallout Shelter (PC/Steam) : Path : %localappdata%\FalloutShelter . File: Fallout.zip ...
: Place your Vault#.sav file here. Ensure you back up your existing saves before overwriting them. 3. Essential Troubleshooting : Check the source where you got the ZIP