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claude-code - 💡(How to fix) Fix Cowork crashes with "exited with code 1" on v1.3036.0 (macOS) Body: [15 comments, 16 participants]

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anthropics/claude-code#49346•Fetched 2026-04-17 08:43:48
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Comments
15
Participants
16
Timeline
28
Reactions
6
Author
mason829mason829
Participants
adlabbeadlabbeamehizzleamehizzlecaptain1267captain1267chickeneyechickeneyeclaude[bot]claude[bot]cyrille-svgcyrille-svgdavidjwalton2020-ossdavidjwalton2020-ossgithub-actions[bot]github-actions[bot]Jiaying-Xue-0Jiaying-Xue-0jrmoreyjrmoreyjscarltonjscarltonlisamunoz-sourcelisamunoz-sourcemason829mason829parkerrsimonparkerrsimontedyuan-idztedyuan-idzVolodymyrSinkovVolodymyrSinkov
Timeline (top)
commented ×15cross-referenced ×5labeled ×4subscribed ×3

Error Message

Error Messages/Logs

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Preflight Checklist

  • I have searched existing issues and this hasn't been reported yet
  • This is a single bug report (please file separate reports for different bugs)
  • I am using the latest version of Claude Code

What's Wrong?

Version: 1.3036.0 (cf521c) macOS version: [whatever yours is — Apple menu > About This Mac] Chat mode works fine Cowork crashes on both existing and new threads Started immediately after updating to this version today No config or OS changes on my end

What Should Happen?

IT should launch without crashing

Error Messages/Logs

Steps to Reproduce

Installed new version.

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

No response

Claude Code Version

1.3036.0 (cf521c)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

No response

extent analysis

TL;DR

The issue can likely be resolved by reverting to a previous version of Claude Code that worked without crashes.

Guidance

  • Since the issue started immediately after updating to version 1.3036.0, it's probable that the update introduced a bug causing the crashes.
  • Try to recall or find the last working version of Claude Code to potentially revert to it as a temporary workaround.
  • If possible, check for any known issues or discussions related to version 1.3036.0 on the Claude Code community forums or GitHub issues page.
  • Consider reaching out to the development team or support for version 1.3036.0 to report the issue and ask for assistance.

Notes

The lack of error messages or logs makes it challenging to pinpoint the exact cause, so reverting to a previous version might be the most straightforward approach to mitigate the issue temporarily.

Recommendation

Apply workaround: Revert to the last known working version of Claude Code until an official fix for version 1.3036.0 is released, as this is likely to immediately resolve the crashing issue.

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#api#model download#tokenizer error#prompt formatting#chain error

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