This update should be compatible with worlds that were using Dimensions version 0.4, as long as you also upgrade the world to Minecraft 1.21.2. This is due to some syntax changes regarding Attributes. As always, a backup is still recommended.

General:

• Updated to Pack Format 57 for Minecraft 1.21.2.
• Updated all attributes to remove prefixes per 1.21.2 syntax
• Updated the Locked Chests in both Rexial and Raiden's arenas to use the new lock syntax.