WorldNamePathFix

Client-side workaround for a Valheim 1.0 bug.

Problem

If a dedicated server's world name contains characters that are invalid in Windows file names (for example quotes: "Welt1"), Windows clients get stuck on a black screen when joining. The log shows:

System.ArgumentException: Illegal characters in path.
  at AltBiomeWorldData.GetFilePath (System.String worldName)
  at AltBiomeWorldData.VerifyBiomeData (World world)

What this mod does

It replaces invalid characters with _ only when the game builds the local biome-data cache file name on your PC. The world, the world name and your character are not changed.

• Install on every Windows client (Steam Deck / Proton users should install it too).
• Not required on the server.
• Remove it once Iron Gate fixes the bug.

Source code is included (WorldNamePathFix.cs).