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GeezerVison is showing github.com โ€” ๐Ÿ› Null object nodes are not registered (resulting in failing inverse kinematics) ยท Issue #505 ยท Animated-Java/animated-java

๐Ÿ› Null object nodes are not registered (resulting in failing inverse kinematics) #505

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๐Ÿ› Null object nodes are not registered (resulting in failing inverse kinematics)#505
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๐Ÿ› BugSomething isn't workingSomething isn't working

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@lolimtaco
lolimtaco
opened on May 20, 2026
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๐Ÿ›‘ Before you Start

  • I have searched existing bug reports for my problem.
  • I have read the F-A-Q.
  • I am using the latest version of Animated Java
  • I will only report a single bug in this report. If I have found multiple bugs, I will create a separate report for each one.

๐Ÿ—ฃ๏ธ Describe the bug

In a model that contains inverse kinematics through Blockbench (using a locator and a null object), the IK is correctly shown in the animation preview, but when exported in-game, any IK movement does not exist.

Viewing the Console through Blockbench's Dev Tools shows that AJ encountered an 'unknown node type' for the null object when attempting to export the model.

Image

โš ๏ธ Error Message

N/A

๐Ÿ”„๏ธ How to Reproduce

  1. Create a model with inverse kinematics (several nodes all parented to the previous node, with a locator at the last one and a null object at the top of the folder)
  2. Create an animation and move the null object, visually seeing the IK
  3. Export the model and play the animation in-game

โœ… Expected Behavior

The IK within the animation should play in-game.

๐Ÿ’ก Solutions & Alternatives

Based off of the console logs, null objects may not be registered as a node type within AJ or are incorrectly named

๐ŸŸฉ Minecraft Version

1.21.4

๐ŸŸฆ Blockbench Version

5.1.4

๐Ÿ’ป Operating System

Windows

๐Ÿ“ƒ Installed Blockbench Plugins

None other than AJ v1.10.0-beta.6

โ›ฐ๏ธ Minecraft Environment

Newly created vanilla 26.1 singleplayer world

Activity

  1. lolimtaco
    assigned
    SnaveSutit
    on May 20, 2026
  2. lolimtaco
    added
    ๐Ÿ› BugSomething isn't workingSomething isn't working
    on May 20, 2026
  3. lolimtaco
    changed the title [-]๐Ÿ› Keyframed inverse kinematics movements do not work in-game[/-] [+]๐Ÿ› Null object nodes are not registered (resulting in failing inverse kinematics)[/+] on May 20, 2026
  4. SnaveSutit
    added a commit that references this issue on Jun 23, 2026

    ๐Ÿ› Fix #505

    This issue will close once commit a919d86 is merged into the 'main' branch.
    a919d86
  5. SnaveSutit
    closed this as completedon Jun 23, 2026
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