[BUG] Cannot install in Mac Catalina 10.15.

Open 💬 1 comment Opened Jul 7, 2026 by whoooami

Preflight Checklist

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

What's Wrong?

Setting up Claude Code...
dyld: Symbol not found: __ZTVNSt3__115basic_stringbufIcNS_11char_traitsIcEENS_9allocatorIcEEEE
Referenced from: ~/.claude/downloads/claude-2.1.202-darwin-x64 (which was built for Mac OS X 13.0)
Expected in: /usr/lib/libc++.1.dylib

bash: line 159: 62182 Abort trap: 6 "$binary_path" install ${TARGET:+"$TARGET"}
Installation was killed before it could finish (exit code 134).

What Should Happen?

should install successful.

Error Messages/Logs

dyld: Symbol not found: __ZTVNSt3__115basic_stringbufIcNS_11char_traitsIcEENS_9allocatorIcEEEE
  Referenced from: ~/.claude/downloads/claude-2.1.202-darwin-x64 (which was built for Mac OS X 13.0)
  Expected in: /usr/lib/libc++.1.dylib

bash: line 159: 62182 Abort trap: 6           "$binary_path" install ${TARGET:+"$TARGET"}
Installation was killed before it could finish (exit code 134).

Steps to Reproduce

curl -fsSL https://claude.ai/install.sh | bash

Claude Model

None

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.202

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_

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