Can you please check for errors and stacktrace from dev tools directly in VSCode (Help > Toggle Developer Tools)?

[vscode-app-1716376879580.log] (https://github.com/software-mansion/react-native-ide/files/15402426/vscode-app-1716376879580.log)

TMScopeRegistry.ts:46 Overwriting grammar scope name to file mapping for scope source.yaml.
Old grammar file: file:///Applications/Visual%20Studio%20Code.app/Contents/Resources/app/extensions/yaml/syntaxes/yaml.tmLanguage.json.
New grammar file: file:///Users/vlamarin/.vscode/extensions/redhat.vscode-yaml-1.14.0/syntaxes/yaml.tmLanguage.json
register @ TMScopeRegistry.ts:46
TMScopeRegistry.ts:46 Overwriting grammar scope name to file mapping for scope source.yaml.
Old grammar file: file:///Applications/Visual%20Studio%20Code.app/Contents/Resources/app/extensions/yaml/syntaxes/yaml.tmLanguage.json.
New grammar file: file:///Users/vlamarin/.vscode/extensions/redhat.vscode-yaml-1.14.0/syntaxes/yaml.tmLanguage.json
register @ TMScopeRegistry.ts:46
log.ts:419 INFO Started local extension host with pid 51552.
log.ts:419 INFO [perf] Render performance baseline is 23ms
console.ts:137 [Extension Host] vscode
webviewElement.ts:482 An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing.
mountTo @ webviewElement.ts:482
notificationsAlerts.ts:40 Error: Cannot read properties of null (reading 'project')
at r.h (vscode-file://vscode-app/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/api/node/extensionHostProcess.js:153:189812)
c @ notificationsAlerts.ts:40

Hm. Do you have any project that reproduces this issue? You can try installing dev version from main (https://ide.swmansion.com/docs/development). This should give us better stack traces.

Either one will help, I can't repro the problem myself.

I can reproduce it as follows:

npx create-expo-app StickerSmash --template blank && cd StickerSmash

Open the StickerSmash and open RN IDE panel.

Then I get this error. The thing I noted is that I have multiple VS Code windows with RN projects open.
In the debug console I see messages about the react-native-preview that things have already been registered (forgot the exact phrase).
When I close all other VS Code windows, restart my vs code, then the RN IDE works, and can launch my project in the integrated emulator

Same issue:

Cannot read properties of null (reading 'project')

Literally nothing starts or opens after pressing "Open IDE Panel".
No logging in the Output window under "React Native IDE".

Developer Tools shows this (after clean):

• Windows 11 23H2
• VSCode 1.93.1
• Radon IDE v0.0.19