Hey, yeah, this is a known bug: ERROR_EXTENSION_HOST_TIMEOUT. The extension host doesn’t finish initializing in time, and the agent gets stuck on “planning next moves”. We’re actively tracking it, on macOS especially after 3.2.11. I can’t share an ETA for a fix yet.
What you can try for now:
- Reset Cursor cache: quit Cursor, then rename or delete
~/.cursor(you can back it up first). After that, sign in again. Some users say it helps temporarily. - Downgrade to the previous stable version via Cursor > Check for Updates… or download an older version manually if this is fully blocking your work.
- If it still doesn’t help, open Help > Toggle Developer Tools > Console and paste the first errors you see when the window starts loading.
Related threads with the same symptom, you can follow them for updates:
- Cursor last update freeze on macOS
- My chats are just hanging with "Planning next moves" and "Taking longer than expected..."
Let me know if resetting ~/.cursor helped.