@VickNV, I am encountering the same issue here.
Background
I am using IsaacSim 4.5.0 installed in a clean docker container. Everything works just fine.
What did I do
I was trying to use the navigation mesh extension by following this tutorial: Installation — Omniverse Extensions, which asked me to enable the following extension:
"omni.anim.navigation.bundle" = { version = "106.3.0" }
"omni.anim.navigation.core" = { version = "106.4.0" }
"omni.anim.navigation.ui" = { version = "106.4.1" }
You may be wondering why their versions are not aligned – I tried bumping to newer versions, but it will break dependencies. In short, the above extension-version combination is what I ended up with that can load all the needed extension correctly.
When finishing the rest of the tutorial above (more specifically, when trying the sample Samples — Omniverse Extensions), the error message indicated that I should load an additional extension “omni.anim.navigation.meshtools”. However, I have tried all its available versions, none of them works. The closest is “omni.anim.navigation.meshtools” = { version = “106.4.1” }, but I got the following error message, which is exactly what was posted in this thread.
2025-07-01 03:22:29 [1,233,281ms] [Error] [carb] Interface: [omni::anim::navigation::INavigation v3.0] requested but default plugin [omni::anim::navigation::INavigation v2.3] cannot provide requested version
2025-07-01 03:22:29 [1,233,281ms] [Error] [carb] [Plugin: omni.anim.navigation.meshtools] Dependency: [omni::anim::navigation::INavigation v3.0] failed to be resolved.
2025-07-01 03:22:29 [1,233,282ms] [Error] [carb] Interface: [omni::anim::navigation::INavigation v3.0] requested but default plugin [omni::anim::navigation::INavigation v2.3] cannot provide requested version
2025-07-01 03:22:29 [1,233,282ms] [Error] [carb] [Plugin: omni.anim.navigation.meshtools] Dependency: [omni::anim::navigation::INavigation v3.0] failed to be resolved.
2025-07-01 03:22:29 [1,233,282ms] [Error] [carb] Interface: [omni::anim::navigation::INavigation v3.0] requested but default plugin [omni::anim::navigation::INavigation v2.3] cannot provide requested version
2025-07-01 03:22:29 [1,233,282ms] [Error] [carb] [Plugin: omni.anim.navigation.meshtools] Dependency: [omni::anim::navigation::INavigation v3.0] failed to be resolved.
2025-07-01 03:22:29 [1,233,283ms] [Error] [carb.scripting-python.plugin] RuntimeError: Failed to acquire interface: omni::anim::navigation::INavMeshProviderMeshTools (pluginName: nullptr)
At:
/home/robot/conda/envs/metasim/lib/python3.10/site-packages/omni/data/Kit/Isaac-Sim Full/4.5/exts/3/omni.anim.navigation.meshtools-106.4.1+106.4.0.lx64.r.cp310/omni/anim/navigation/meshtools/scripts/extension.py(9): on_startup
/home/robot/conda/envs/metasim/lib/python3.10/site-packages/omni/kernel/py/omni/ext/_impl/_internal.py(164): _startup_ext
/home/robot/conda/envs/metasim/lib/python3.10/site-packages/omni/kernel/py/omni/ext/_impl/_internal.py(224): startup
/home/robot/conda/envs/metasim/lib/python3.10/site-packages/omni/kernel/py/omni/ext/_impl/_internal.py(328): startup_extension
PythonExtension.cpp::startup()(2): <module>
/home/robot/conda/envs/metasim/lib/python3.10/site-packages/isaacsim/extscache/omni.kit.window.extensions-1.4.25+d02c707b/omni/kit/window/extensions/ext_commands.py(33): do
/home/robot/conda/envs/metasim/lib/python3.10/site-packages/isaacsim/extscache/omni.kit.commands-1.4.9+d02c707b.lx64.r.cp310/omni/kit/undo/undo.py(81): execute
/home/robot/conda/envs/metasim/lib/python3.10/site-packages/isaacsim/extscache/omni.kit.commands-1.4.9+d02c707b.lx64.r.cp310/omni/kit/commands/command.py(463): execute
/home/robot/conda/envs/metasim/lib/python3.10/site-packages/isaacsim/extscache/omni.kit.window.extensions-1.4.25+d02c707b/omni/kit/window/extensions/common.py(509): toggle_self
/home/robot/conda/envs/metasim/lib/python3.10/asyncio/events.py(80): _run
/home/robot/conda/envs/metasim/lib/python3.10/asyncio/base_events.py(1909): _run_once
/home/robot/conda/envs/metasim/lib/python3.10/site-packages/omni/extscore/omni.kit.async_engine/omni/kit/async_engine/async_engine.py(197): run_once
/home/robot/conda/envs/metasim/lib/python3.10/site-packages/omni/extscore/omni.kit.async_engine/omni/kit/async_engine/async_engine.py(263): <lambda>
/home/robot/conda/envs/metasim/lib/python3.10/site-packages/isaacsim/exts/isaacsim.simulation_app/isaacsim/simulation_app/simulation_app.py(535): update
/home/robot/RoboVerse/metasim/scripts/launch_sim.py(21): <module>
2025-07-01 03:22:29 [1,233,283ms] [Error] [omni.ext.plugin] [ext: omni.anim.navigation.meshtools-106.4.1] Failed to startup python extension.
[1233.811s] [ext: omni.anim.navigation.meshtools-106.4.1] shutdown
Any thoughts?
