fman crashes on start since MacOS Tahoe (26) update

[andrasbiro-silabs]

As per the title. Tested on an M1 and an M4 macbook pro.

Crashlog: https://pastebin.com/cJLDK17d

[pinnerup]

I experience the same on my Apple M3 MacBook Air after upgrading to MacOS 26.

Here's my crash log: https://pastebin.com/A95s7yq3

[mherrmann]

Thank you for letting me know. I will fix as soon as I am on Tahoe.

[Shai-Koffman]

AI analysis if the issue :) (not sure if true)
Root cause: fman 1.7.3 ships an old Intel-only Python 3.6 + PyObjC stack. On macOS Tahoe 26.0 (25A354), the bundled PyObjC crashes while enumerating Objective‑C classes during bundle loading. This happens under Rosetta and is a known brittle path in older PyObjC builds.
• Fix that actually lasts: fman needs an updated build (Apple‑silicon native, modern Python/PyQt, PyObjC ≥ 11)

A temporary workaround, Obviously breaking some functionality.
cd "/Applications/fman.app/Contents/MacOS"
mv objc objc.disabled

Reverting with : mv "/Applications/fman.app/Contents/MacOS/objc.disabled" "/Applications/fman.app/Contents/MacOS/objc"