Google Antigravity & Plateform.io extension and pyhton version 3.14 crash plateform.io does not start

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Here how Gemini fast 3 fix my plateform.io extension: :magnifying_glass_tilted_left: Root Cause Analysis

By examining the Extension Host logs (exthost.log), I found a critical activation error:
TypeError: Cannot read properties of undefined (reading ‘packageJSON’)

This error occurred because the PlatformIO extension fork you are using (davidgomes.platformio-ide-cursor) was still looking for itself using the original PlatformIO identifier (platformio.platformio-ide). Since it couldn’t find an extension with that ID, it returned undefined, crashing the activation process.

:hammer_and_wrench: Actions Taken

  1. Patched the Extension: I have modified the compiled code in the extension’s directory:
    • File: C:\Users\miche.antigravity\extensions\davidgomes.platformio-ide-cursor-0.0.1-universal\dist\extension.js
    • Change: Replaced the hardcoded ID platformio.platformio-ide with the correct ID for your environment: davidgomes.platformio-ide-cursor.
  2. Verified Environment:
    • Confirmed Python 3.13 is now your primary system Python (3.14 has been removed from PATH).
    • Confirmed PlatformIO’s internal environment (penv) is using Python 3.11.1, which is stable and compatible.

:rocket: Next Steps for You

To apply the fix, please:

  1. Fully Close VS Code / Antigravity.
  2. Restart the application.

PlatformIO should now activate correctly. If you see it downloading the PIO Core, let it finish; it’s a one-time setup after cleaning the environment.

Starting logs check summary:

  • Status: Fixed (Activation error resolved).
  • Python Status: Compatible (3.13 on PATH, 3.11 in penv).