Computer Use crashes on macOS 15.3 after ChatGPT update: missing _swift_task_addPriorityEscalationHandler
What version of the Codex App are you using (From “About Codex” dialog)?
ChatGPT：26.707.41301，build 5103
What subscription do you have?
Pro
What platform is your computer?
Darwin 24.3.0 arm64 arm
What issue are you seeing?
After updating to the unified ChatGPT desktop app, the bundled Computer Use
plugin can no longer start on macOS 15.3.
Environment:
- ChatGPT desktop app: 26.707.41301, build 5103
- Computer Use helper: 26.708.1000366, build 1000366
- macOS: 15.3 (24D60)
- Architecture: Apple Silicon arm64
- uname -mprs: Darwin 24.3.0 arm64 arm
Error returned by Computer Use:
Sky Computer Use native pipe startup failed
Both SkyComputerUseClient and SkyComputerUseService terminate immediately.
The macOS crash report contains:
Termination Reason: Namespace DYLD, Code 4 Symbol missing
Symbol not found: _swift_task_addPriorityEscalationHandler
Referenced from: SkyComputerUseClient / SkyComputerUseService
Expected in: /usr/lib/swift/libswift_Concurrency.dylib
The processes crash before reaching the Screen Recording or Accessibility
permission checks. Re-enabling those permissions does not affect the failure.
The helper bundle declares LSMinimumSystemVersion 14.4, but it was built using
the macOS 26.4 SDK and references a Swift concurrency symbol that is unavailable
in the macOS 15.3 runtime.
What steps can reproduce the bug?
- Use an Apple Silicon Mac running macOS 15.3.
- Install or update ChatGPT desktop to version 26.707.41301.
- Enable the bundled Computer Use plugin.
- Start a new ChatGPT task and invoke @Computer, or initialize the bundled
Computer Use runtime and call sky.list_apps().
- Computer Use returns "Sky Computer Use native pipe startup failed".
- A new SkyComputerUseClient or SkyComputerUseService crash report appears
under ~/Library/Logs/DiagnosticReports.
Minimal reproduction:
if (!globalThis.sky) {
const { setupComputerUseRuntime } = await import(
"/Users/<username>/.codex/plugins/cache/openai-bundled/" +
"computer-use/1.0.1000366/scripts/computer-use-client.mjs"
);
await setupComputerUseRuntime({ globals: globalThis });
}
await sky.list_apps();
Result:
Sky Computer Use native pipe startup failed
The failure reproduces in a fresh task and does not depend on token usage or
context-window usage.
Session ID: Not applicable / not available.
Token-limit usage: Not applicable.
Context-window usage: Not applicable.
What is the expected behavior?
The bundled Computer Use helper should start successfully on a supported
Apple Silicon Mac running macOS 15.3.
Calling sky.list_apps() should return the available applications, and Computer
Use should proceed to request or verify Screen Recording and Accessibility
permissions instead of crashing during dynamic linking.
If macOS 15 is no longer supported by this helper build, ChatGPT should detect
the incompatible OS version and display a clear compatibility message instead
of reporting a generic native-pipe startup failure.
Additional information
_No response_
6 Comments
Potential duplicates detected. Please review them and close your issue if it is a duplicate.
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Computer Use plugin crashes at launch on macOS 15.5
Product
Environment
Reproduction
sky.list_apps()operation.No target application is opened and no UI action is attempted.
Actual result
The wrapper returns:
Sky Computer Use native pipe startup failedBoth native processes terminate at launch:
SkyComputerUseClientSkyComputerUseServiceThe macOS crash reports record:
EXC_CRASH / SIGABRTDYLDSymbol missing_swift_task_addPriorityEscalationHandler/usr/lib/swift/libswift_Concurrency.dylibExpected result
Computer Use should initialize and the passive app-list operation should return without launching or controlling an application.
Reproducibility
100 percent in repeated attempts, including after updating and restarting the desktop app.
Additional checks
Impact
Computer Use cannot initialize at all on this host. App enumeration, passive app-state reads, and all later UI operations are unavailable.
Privacy note
This report intentionally excludes usernames, account details, local project names and paths, document or asset names, task identifiers, process identifiers, device identifiers, crash UUIDs, and raw crash-report attachments.
Confirmed on another affected Apple Silicon machine.
Environment:
Reproduction:
sky.list_apps().Sky Computer Use native pipe startup failed.A fresh
SkyComputerUseServicediagnostic report is generated on every attempt. The launch-time DYLD termination is:This occurs before any Accessibility or Screen Recording permission flow, so it is not a permissions/configuration problem. Please provide a helper build compatible with the macOS 15 Swift runtime, or an explicit compatibility gate.
I can confirm the same regression on another macOS 15.x version.
Environment:
The latest SkyComputerUseClient crash report shows:
The process terminates at launch before Accessibility or Screen Recording permission checks. Restarting the app and checking permissions do not resolve it.
This confirms that the current helper is also incompatible with macOS 15.6.1, not only macOS 15.3.
Confirmed on another affected machine.
Environment:
Symptoms:
sky.list_apps()fails with:Sky Computer Use native pipe startup failedDirect helper launch fails with:
This started after updating Codex/Computer Use. The same machine and permissions worked before the update, so this appears to be a compatibility regression in the new Computer Use helper rather than a permissions issue.
I just updated CODEX and gave it a try; the issue has been fixed—that was really fast!