FAQ

This is a compact FAQ with short, actionable steps for common issues users hit when working with WindowGen.

Q: Blender crashes when I try to add a Window. What do I do?

Short fix (try in this order):

  1. Open the Outliner and switch to Blender File view.

    _images/faq_windowgen3.0_library_fix_01.png

  2. Expand Libraries.

    _images/faq_windowgen3.0_library_fix_02.png

  3. Right‑click the WindowGen library and select Reload.

    _images/faq_windowgen3.0_library_fix_03.png

  4. Save the .blend and retry to add the Window.

Q: The Blender is slow and it takes a long time to load and modify the windows. What should I do?

Short answer:

  • This slowdown is a known issue with Blender 4.5 and has been reported. For now we recommend using a Blender version prior to 4.4 for best performance with WindowGen.

Quick steps:

  1. If you are on Blender 4.5, try opening the file in Blender 4.4 (or earlier) and test performance.

  2. Keep WindowGen updated to the latest add-on release.

Q: All the windows are missing in my scene. How can I restore them?

Short answer:

  • WindowGen should automatically prompt to update the library when needed — accepting the prompt usually restores missing windows. If no prompt appears, manually relocate the WindowGen library via the Outliner.

Quick steps:

  1. Look for add-on prompt asking to update WindowGen — accept it if shown.

    _images/02_working_with_04update.png

  2. If not prompted: follow the steps below to manually relocate the WindowGen library to the latest WindowGen.blend

  3. Open the Outliner and switch to Blender File view.

    _images/faq_windowgen3.0_library_fix_01.png

  4. Expand Libraries.

    _images/faq_windowgen3.0_library_fix_02.png

  5. Right‑click the WindowGen library and select Relocate.

    _images/faq_windowgen3.0_library_fix_04.png

    Tip

    WindowGen.blend is usually stored inside the WindowGen add-on assets folder in your Blender user directory. Replace <username> and <version> (e.g. 4.4) before using the paths below.

    # Windows (typical)
C:\Users\<username>\AppData\Roaming\Blender Foundation\Blender\<version>\extensions\user_default\windowgen\assets\WindowGen.blend

# macOS (typical)
/Users/<username>/Library/Application Support/Blender/<version>/extensions/user_default/windowgen/assets/WindowGen.blend

# Linux (typical)
/home/<username>/.config/blender/<version>/extensions/user_default/windowgen/assets/WindowGen.blend

    If you prefer variables: on Windows you can use %APPDATA%\Blender Foundation\Blender\<version>\....

  6. After relocating, windows should reappear in your Scene.

  7. If the issue persists, check the modifier stack for multiple Auto Smooth modifiers. Remove any duplicates and reapply Auto Smooth.