Hey, thanks for the report.
This is a known issue on Windows: checkpoint data can get corrupted during chat or agent migration. Version 2.3 includes fixes for this, but it looks like it can still happen for you.
To debug, we’ll need logs:
- Help → Toggle Developer Tools → Console
- Try opening the agent that won’t load
- Send the errors from Console (especially
[composer]or[data_loss])
Workarounds for now:
- Try updating to the latest stable version (Early Access is in Cursor Settings → Beta)
- For crashes, run
cursor --disable-extensionsto check if it’s extension-related - Export important chats (three dots → Export transcript)
About MCP servers (@liquefy): try reloading the window after starting Cursor, or disable and re-enable MCP servers one by one.
Related report: Some chats fail to load or open
Send the logs and we’ll dig in further.