Cursor unusable on macOS 15.3.2 - Extension host crashes on clean install, no extensions installed or enabled, no project open

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1

“Extension host” crashes on clean install, no extensions installed or enabled, no project open - Rendering cursor unusable on macOS 15.3.2

2025-04-02 11:42:24.857 [info] updateURL https://api2.cursor.sh/updates/api/update/darwin-universal/cursor/0.48.6/b89c6304cecf5a419b6ad6684058cc142966d02d820b632a911010c0974acb36/stable
2025-04-02 11:42:24.857 [info] update#setState idle
2025-04-02 11:42:28.324 [info] Extension host with pid 9544 exited with code: 6, signal: unknown.
2025-04-02 11:42:28.325 [error] [UtilityProcess id: 1, type: extensionHost, pid: 9544]: crashed with code 6 and reason 'crashed'
2025-04-02 11:42:28.996 [info] Extension host with pid 9719 exited with code: 6, signal: unknown.
2025-04-02 11:42:28.997 [error] [UtilityProcess id: 2, type: extensionHost, pid: 9719]: crashed with code 6 and reason 'crashed'
2025-04-02 11:42:54.744 [info] update#setState checking for updates
2025-04-02 11:42:54.855 [info] UpdateService onUpdateNotAvailable()
2025-04-02 11:42:54.855 [info] update#setState idle
2025-04-02 11:43:28.622 [info] Extension host with pid 9862 exited with code: 6, signal: unknown.
2025-04-02 11:43:28.622 [error] [UtilityProcess id: 3, type: extensionHost, pid: 9862]: crashed with code 6 and reason 'crashed'

Launching cursor with --disable-extensions flag works.
Launching cursor without the flag and without any extension enabled, doesn’t work

cursor --list-extensions outputs nothing

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image5110×2570 466 KB

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2

Same issue here. Did you find the cause?

Update: After 1+ hour of debugging, I found the (super weird) root cause. Nothing helped but removing this line from my ~/.zshrc: export NODE_OPTIONS="$NODE_OPTIONS --max_old_space_size=8192" :speak_no_evil_monkey:

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Update:

  • I found that 0.45 was working for me.
  • I was able to make 0.48 work by editing my ~/.zshrc which had a malformed line

my .zshrc was like to for a long time and cursor is the only piece of software on my computer that had issues because of this.

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