: Includes KKManager for easy browsing and updating of character cards directly from the community servers.

Installing the latest patch is designed to be "plug and play":

Version 43 is not compatible with save files from Version 41 or earlier. Saves from Version 42.5 (the hotfix) should convert automatically, but back them up.

However, a few minor known issues are listed in the release notes:

The community modding scene has always been the heartbeat of PC simulation gaming, and the release of marks another massive milestone. For many players, the "HF Patch" (short for "High-Frequency" or "Hardcore" Patch) is the first thing they install after downloading a game. It isn't just an update; it’s an essential overhaul that brings translations, performance fixes, and creative freedom to the platform. What’s New in Version 43?