If the game crashes specifically when you approach the castle, it’s a rendering bottleneck. Open your configuration files (.ini) and ensure that your Texture Memory Budget is set to at least 4GB (if your hardware supports it).
The mod requires a base script or a specific version of a "Castle" asset library that isn't installed. candid+hd+castle+3+fix
Check if the "Castle 3" base file has been updated. Often, an "HD" add-on is designed for version 1.2 of a map, but the user is running version 1.0. Ensure the base and the HD overlay versions match. If the game crashes specifically when you approach
Check for .dds files. If they are 0kb, the download was corrupted. the download was corrupted.