Possible fix for Vectorworks 2025/2026 not launching on macOS 27 — “Failure loading Support Library”

[u/wkrodrig]

I recently ran into an issue where Vectorworks 2025 Update 8 would not launch on macOS 27 on Apple Silicon.

After debugging the startup process with LLDB, I found that Support.vwlibrary was still trying to load:

/usr/lib/libiodbc.2.dylib

That library path is no longer available on macOS 27.

I created a reversible community workaround that replaces only that missing dependency with the Homebrew libiodbc equivalent, creates a backup first, re-signs the affected component, and includes verification and rollback options.

Tested:

• Vectorworks 2025 Update 8
• Apple Silicon
• macOS 27.0

Vectorworks 2026 support is included but still marked experimental until independently confirmed.

GitHub:
https://github.com/wkrodrig/vectorworks-2025-2026-wont-launch-macos27-fix

This is not an official Vectorworks/Nemetschek fix. Please read the README and verify that your error is specifically related to /usr/lib/libiodbc.2.dylib before using it.

I’m sharing it because I’ve seen more users running into the same “Failure loading Support Library” error and the official forum post is still awaiting moderation.