Even legitimate downloads run into problems. Here are the top three errors with solutions:
Downgrading from 1.7.9c or higher can break new save data (like Tainted Cain recipe changes). Fix: Before downgrading, back up your rep_persistentgamedata.dat file. After downgrading, start a new save slot for 1.7.9b. DO NOT attempt to load a save created on a newer patch.
: Items gained through D4 rerolls once again count toward transformations like Guppy or Leviathan.
If you're playing on a non-Steam platform, you can check for updates in the game's settings or on the platform's store page.
