MacOS: Crashes on opening

[dartMo10]

The Moonlight application errors out shortly after opening in MacOS 26.0.1. No splash screens/windows/dashboards; an error report simply opens (copied below). There seems to be no way to get past this window. I'm running the latest release (v6.1.0) and tried earlier versions with the same result. I also installed via the Terminal window with the same result. If you need any other info: dartmore10@yahoo.com

Date/Time: 2025-10-03 17:54:26.4252 -0700
Launch Time: 2025-10-03 17:54:23.0188 -0700
Hardware Model: Mac13,1
OS Version: macOS 26.0.1 (25A362)
Release Type: User

Crash Reporter Key: C0F175CF-BF6A-1BCD-C891-7F2E9DE32531
Incident Identifier: F2EF007A-4F0C-4823-8D68-611C19876946

Sleep/Wake UUID: 84B14B2E-C0CA-4C02-BA04-7775E9B4818B

Time Awake Since Boot: 98000 seconds
Time Since Wake: 8595 seconds

System Integrity Protection: enabled

Triggered by Thread: 0

Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Subtype: KERN_INVALID_ADDRESS at 0x000000000000005d
Exception Codes: 0x0000000000000001, 0x000000000000005d

Termination Reason: Namespace SIGNAL, Code 11, Segmentation fault: 11
Terminating Process: exc handler [28322]

[michellao]

Same issue on Mac Mini M4.
I got the issue recently.
I've build on this commit: 0c83543

logs: https://0x0.michelao.me/LLdWUumMw7fJEH

[michellao]

I've test on latest commit 579ad25 and it's the same problem.

[cgutman]

I'm not able to reproduce this on M4 Mac Mini on macOS 26.0.1. Can you try running the build from the terminal or Qt Creator to get the log output from Moonlight/Qt itself (rather than just the crash report)?

[michellao]

I'm unable to build on my machine now but before I've done that in MacOS 15.
So I've build it on GitHub Actions and download from it: https://github.com/michellao/moonlight-qt/actions/runs/18633307431

[cgutman]

That's fine but I need your Moonlight log file to debug it. Go to /tmp on your Mac and attach the latest Moonlight.log file there to this issue.

[michellao]

logs: Moonlight-1760892950.log

[cgutman]

Thanks, the error here seems to imply either the Moonlight app package is corrupted or some catastrophic failure initializing Qt.

00:00:00 - Qt Warning: Could not find the Qt platform plugin "cocoa" in ""

Does this happen for you with the latest official release binaries?

[michellao]

Interesting, the app opens normally with the official release