Unable to run Scatter Tool example

Omniverse Omniverse Extensions Sample Extensions
1

Hello,

I was trying out the extension sample project on creating Scatter Tool.

After making changes in window.py as mentioned in the scatter tools documentation, I am getting below error.

2024-11-08 06:15:00  [Warning] [omni.ext._impl._internal] omni.example.ui_scatter_tool-1.0.1 -> <class 'omni.example.ui_scatter_tool.extension.ScatterWindowExtension'>: extension object is still alive, something holds a reference on it. References: ["[0]:type: <class 'method'>, id: 1732836616576"]
2024-11-08 06:15:00  [Error] [carb.scripting-python.plugin] AttributeError: 'ScatterWindowExtension' object has no attribute '_window'
2024-11-08 06:15:00  [Error] [carb.scripting-python.plugin] 
2024-11-08 06:15:00  [Error] [carb.scripting-python.plugin] At:
2024-11-08 06:15:00  [Error] [carb.scripting-python.plugin]   d:/repo/others/kit-extension-sample-scatter-tutorial-start/exts/omni.example.ui_scatter_tool/omni/example/ui_scatter_tool/extension.py(42): on_shutdown
2024-11-08 06:15:00  [Error] [carb.scripting-python.plugin]   d:\omniverse/pkg/kit-106.3.0/kernel/py\omni\ext\_impl\_internal.py(233): shutdown
2024-11-08 06:15:00  [Error] [carb.scripting-python.plugin]   d:\omniverse/pkg/kit-106.3.0/kernel/py\omni\ext\_impl\_internal.py(336): shutdown_extension
2024-11-08 06:15:00  [Error] [carb.scripting-python.plugin]   PythonExtension.cpp::shutdown()(2): <module>
2024-11-08 06:15:00  [Error] [carb.scripting-python.plugin] 
2024-11-08 06:15:00  [Error] [omni.ext.plugin] Failed while calling `shutdown_extensions` function: d:/repo/others/kit-extension-sample-scatter-tutorial-start/exts/omni.example.ui_scatter_tool
2024-11-08 06:15:00  [Warning] [omni.kit.app._impl] omni.kit.ui.get_editor_menu() is deprecated. Please update "omni.example.ui_scatter_tool" to use omni.kit.menu.utils

The error even happens on saving window.py without adding any code. Due to this none of the UI elements added are rendered.

If I create a new extension from IDE, then the class created is class MyClassNameExtension(omni.ext.IExt): instead of class ScatterWindow(ui.Window):.

I am using Kit v106.3.0. Looks like the entire implementation has changed with respect to version upgrades. Is that correct?

Thanks in advance.

2

It may be that the scatter tool or the extensions are you seeking, are not published, or not published correctly for 106. Let me investigate and get back to you. Out of interest, have you tried to do the exact same thing for 105 ?

3

Nope. I didn’t tried it in v105. I have updated all the IDEs to latest version.

4

@aashok3
Can you copy/paste your window.py code so I can review it, please? Seems you might have missed something to build the window

5

I did that long back. Let me see if I can find that project. I will share the details.

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