Cannot Find Behavior Script on Characters_02 in Isaac Sim 4.5 Replicator-Agent Extension

Omniverse Isaac Sim
1

Isaac Sim Version

4.5.0

Operating System

Windows 11

GPU Information

  • Model: geforce 3070
  • Driver Version: 570

Topic Description

Behavior script not recognized for characters under Characters_01 in Omniverse Isaac Sim IRA extension

Detailed Description

I have a USD scene in Isaac Sim 4.5.0 with two character groups under /World/Characters:

  • Characters_01, containing male_adult_construction_01
  • Characters_02, containing male_adult_construction_01_new

For each, I added the omni.anim.behavior.Script component to the root Xform prim and configured the Script File path. In the IRA UI’s Characters tab I added both group paths under Include Paths. When I click Set Up Simulation, only the character in Characters_02 is recognized and spawned. For the one in Characters_01, I get an error saying Replicator cannot find the behavior script on the root prim, even though I attached it exactly as with the other group.

Steps to Reproduce

  1. Open a USD stage in Isaac Sim 4.5.0 containing:
    /World/Characters/Characters_01/male_adult_construction_01/…
    /World/Characters/Characters_02/male_adult_construction_01_new/…
  2. Select each root Xform prim (male_adult_construction_01 and male_adult_construction_01_new) and add the Behavior Script (omni.anim.behavior.Script) component via the Property panel.
  3. Set the Script File path on each component to the correct .py location.
  4. In the IRA UI → Characters tab, add both /World/Characters/Characters_01 and /World/Characters/Characters_02 to Include Paths.
  5. Save the USD and click Set Up Simulation.
    (Add more steps as needed)

Error Messages

2025-06-27 03:46:39 [Error] [C__path__users_kiro_appdata_local_ov_pkg_isaac__dash__sim__dash__4__dot__5__dot__0_extscache_omni__dot__anim__dot__people__dash__0__dot__6__dot__7+106__dot__5__dot__0_omni_anim_people_scripts_.character_behavior] Cannot find character with behavior script attaches on /World/Characters/Characters_01/male_adult_construction_01/ManRoot/male_adult_construction_01 under character root primn.

file

test.zip (3.7 KB)

Additional Information

What I’ve Tried

  • Confirmed the prim paths and names match exactly (including casing and absence of typos).
  • Verified the Behavior Script component is on the Xform root prim of male_adult_construction_01.
  • Ensured the Script File URL (omniverse://…) is correct and accessible.

Related Issues

Additional Context

(Add any other context about the problem here)