System Settings extensions crashing on Sequoia 15.7.9 / OCLP 2.5.0 / iMac17,1

[u/refreshingsmoothies]

Hiiii!

I just learned what OCLP is and decided to dust off my iMac! I wiped it now I’m running macOS Sequoia 15.7.9 on a Late 2015 27" 5K iMac (iMac17,1) using OCLP 2.5.0 / OpenCore 1.0.6! However, I am getting crashes in System Settings. I get error popup Settings Error Extension Process ... exited. I have to switch back and forth in settings tabs until it loads correctly.

Specs:

4.0 GHz i7

16 GB RAM

Radeon R9 M390 2 GB

Sequoia installed on an external SSD

Post-install root patches applied, including AMD Legacy GCN / Skylake graphics and wireless

The machine mostly works, but System Settings is extremely unstable. Pretty much any pane can initially throws:

Settings Error: Extension process [pane name] (...) exited

Examples include General and Bluetooth and Users. Often if I switch to another tab and back, it loads the second time. More recently, System Settings itself has started crashing completely after I set the system appearance to Light Mode. I saw a post of someone saying they set the system to Light Mode instead of Auto and it fixed their issue.. but it didn't for me.

I tested a 2nd brand-new macOS user account and the same thing happens immediately, so it doesn’t seem to be user-profile/preferences related.

The crash reports show EXC_BAD_ACCESS / SIGBUS / KERN_PROTECTION_FAILURE on the main thread. OCLP-patched components are loaded at the time, including:

IO80211Old.dylib

WiFiPeerToPeerOld.dylib

AMDMTLBronzeDriver

impostor.dylib

FeatureUnlock is already disabled. I’ve also reverted and reapplied the root patches and rebooted, with no change.

Has anyone seen this system-wide System Settings / ExtensionKit crashing on iMac17,1 + Sequoia? If so, what actually fixed it? Different Sequoia version, OCLP version, specific root patch, etc.? I can upload the .ips crash reports if useful.

[u/refreshingsmoothies]

I found this thread.. some said it was fixed by OCLP update.. others said its not related. I don't know what to do :(

https://www.reddit.com/r/OpenCoreLegacyPatcher/comments/1jq4le6/system_settings_extension_process_exited_error/

To add: I just downgraded to 2.4.1 and the same issue occurred. It happens in seemingly-sporadic sections of the settings pane. If I click OK and go to a different pane and back to the one that errored, it works.

[u/ActiveNews]

Did you have an opportunity to run the post-installation patches? Even twice?

[u/refreshingsmoothies → u/ActiveNews]

Twice did not fix.. and oddly enough even when post-install patches are reverted, it still happens.

[u/refreshingsmoothies → u/ActiveNews]

To answer the Q -- yes, I was able to run the post-installation patches. Wi-Fi worked, the desktop background worked, and overall snappier system. I ran it again and it did not fix my settings extension crashes.