MATLAB Release
R2026a
Operating System
Windows
Agent Platform
Claude Code
Other Agent Platform
No response
MCP Server Version
0.11.1
Steps to Reproduce
Here is the process and solution，every time the MCP is installed, claude code can not launch.
Claude code version has to be limited.
Issue: Claude Code (Bun native version) crashes with a segfault on startup, reporting panic(main thread): Segmentation fault, with the crash occurring in MozartBreathCore.dll.
Root Cause: There is a fundamental conflict between the Bun runtime and MATLAB DLLs (MozartBreathCore.dll) on Windows. Whether from third-party sources or the official MathWorks MCP Server, this DLL gets injected into the Bun process address space, causing a segmentation fault. This affects Bun versions v1.3.5 ~ v1.3.14 (Claude Code versions v2.1.11 ~ v2.1.145).
Solution: Switch to the npm/Node.js version of Claude Code instead of the Bun native version:
Install the Node.js version: npm install -g @anthropic-ai/claude-code@2.1.112
Disable the Bun native binary: mv ~/.local/bin/claude.exe ~/.local/bin/claude.exe.bun-bak
Add "DISABLE_AUTOUPDATER": "1" to ~/.claude/settings.json to prevent auto-updating back to the Bun version
Current Configuration: Claude Code v2.1.112 (npm/Node.js) + MATLAB MCP Core Server v0.11.1, running normally.
Expected Behavior
No matter what the Claude Code version is, MCP server can work.
Actual Behavior
Switch to the npm/Node.js version of Claude Code instead of the Bun native version:
Install the Node.js version: npm install -g @anthropic-ai/claude-code@2.1.112
Disable the Bun native binary: mv ~/.local/bin/claude.exe ~/.local/bin/claude.exe.bun-bak
Add "DISABLE_AUTOUPDATER": "1" to ~/.claude/settings.json to prevent auto-updating back to the Bun version
Additional Context
No response
MATLAB Release
R2026a
Operating System
Windows
Agent Platform
Claude Code
Other Agent Platform
No response
MCP Server Version
0.11.1
Steps to Reproduce
Here is the process and solution，every time the MCP is installed, claude code can not launch.
Claude code version has to be limited.
Issue: Claude Code (Bun native version) crashes with a segfault on startup, reporting panic(main thread): Segmentation fault, with the crash occurring in MozartBreathCore.dll.
Root Cause: There is a fundamental conflict between the Bun runtime and MATLAB DLLs (MozartBreathCore.dll) on Windows. Whether from third-party sources or the official MathWorks MCP Server, this DLL gets injected into the Bun process address space, causing a segmentation fault. This affects Bun versions v1.3.5 ~ v1.3.14 (Claude Code versions v2.1.11 ~ v2.1.145).
Solution: Switch to the npm/Node.js version of Claude Code instead of the Bun native version:
Install the Node.js version: npm install -g @anthropic-ai/claude-code@2.1.112
Disable the Bun native binary: mv ~/.local/bin/claude.exe ~/.local/bin/claude.exe.bun-bak
Add "DISABLE_AUTOUPDATER": "1" to ~/.claude/settings.json to prevent auto-updating back to the Bun version
Current Configuration: Claude Code v2.1.112 (npm/Node.js) + MATLAB MCP Core Server v0.11.1, running normally.
Expected Behavior
No matter what the Claude Code version is, MCP server can work.
Actual Behavior
Switch to the npm/Node.js version of Claude Code instead of the Bun native version:
Install the Node.js version: npm install -g @anthropic-ai/claude-code@2.1.112
Disable the Bun native binary: mv ~/.local/bin/claude.exe ~/.local/bin/claude.exe.bun-bak
Add "DISABLE_AUTOUPDATER": "1" to ~/.claude/settings.json to prevent auto-updating back to the Bun version
Additional Context
No response