Crash on boot for particular `basic/scenes/Untitled.json`

Operating System Info

macOS 14

Other OS

No response

OBS Studio Version

30.1.2

OBS Studio Version (Other)

No response

OBS Studio Log URL

https://obsproject.com/logs/PoDNSobWHFldo2Nz

OBS Studio Crash Log URL

No crash logs generated

Expected Behavior

OBS not to crash on startup.

I don't think those OBS logs will be super useful -- I looked at all my logs and they don't seem to have anything related to the crash.

I also found making a more than few websocket requests back to back consistently creates bad Untitled.json files which cause my OBS to crash on startup.

Current Behavior

OBS crashes on startup with seemingly no relevant logs.

Steps to Reproduce

I got here from programmatically making a number of (valid) websocket requests, but I found I the source of. the crash to be in the Untitled.json that OBS created.

1. Starting from a fresh install
2. Open OBS so files in ~/Library/Application Support/obs-studio/ are created
3. Replace ~/Library/Application Support/obs-studio/basic/scenes/Untitled.json with the following contents:

{
    "AuxAudioDevice1": {
        "prev_ver": 503382018,
        "name": "Mic/Aux",
        "uuid": "44d819e4-36e9-42d8-adac-d94909f8dfec",
        "id": "coreaudio_input_capture",
        "versioned_id": "coreaudio_input_capture",
        "settings": {
            "device_id": "default"
        },
        "mixers": 255,
        "sync": 0,
        "flags": 0,
        "volume": 1.0,
        "balance": 0.5,
        "enabled": true,
        "muted": false,
        "push-to-mute": false,
        "push-to-mute-delay": 0,
        "push-to-talk": false,
        "push-to-talk-delay": 0,
        "hotkeys": {
            "libobs.mute": [],
            "libobs.unmute": [],
            "libobs.push-to-mute": [],
            "libobs.push-to-talk": []
        },
        "deinterlace_mode": 0,
        "deinterlace_field_order": 0,
        "monitoring_type": 0,
        "private_settings": {}
    },
    "current_scene": "",
    "current_program_scene": "",
    "scene_order": [],
    "name": "Untitled",
    "sources": [
        {
            "prev_ver": 503382018,
            "name": "Countdown Timer • 0b391f21-41d9-4600-8f00-9d0287851f4c",
            "uuid": "48c11126-c4e9-406d-88e5-829edda05999",
            "id": "text_ft2_source",
            "versioned_id": "text_ft2_source_v2",
            "settings": {
                "color": 4294967295,
                "text": "4:08",
                "font": {
                    "face": "Avenir",
                    "size": 120
                },
                "color1": 4278198255,
                "color2": 4278190185
            },
            "mixers": 0,
            "sync": 0,
            "flags": 0,
            "volume": 1.0,
            "balance": 0.5,
            "enabled": true,
            "muted": false,
            "push-to-mute": false,
            "push-to-mute-delay": 0,
            "push-to-talk": false,
            "push-to-talk-delay": 0,
            "hotkeys": {},
            "deinterlace_mode": 0,
            "deinterlace_field_order": 0,
            "monitoring_type": 0,
            "private_settings": {}
        },
        {
            "prev_ver": 503382018,
            "name": "Execution Text • 0b391f21-41d9-4600-8f00-9d0287851f4c",
            "uuid": "9d260956-d599-4c97-8c2f-882552682978",
            "id": "text_ft2_source",
            "versioned_id": "text_ft2_source_v2",
            "settings": {
                "color": 4294967295,
                "text": "Execution",
                "font": {
                    "face": "Avenir",
                    "size": 120
                },
                "color1": 4278198255,
                "color2": 4278190185
            },
            "mixers": 0,
            "sync": 0,
            "flags": 0,
            "volume": 1.0,
            "balance": 0.5,
            "enabled": true,
            "muted": false,
            "push-to-mute": false,
            "push-to-mute-delay": 0,
            "push-to-talk": false,
            "push-to-talk-delay": 0,
            "hotkeys": {},
            "deinterlace_mode": 0,
            "deinterlace_field_order": 0,
            "monitoring_type": 0,
            "private_settings": {}
        }
    ],
    "groups": [],
    "quick_transitions": [
        {
            "name": "Cut",
            "duration": 300,
            "hotkeys": [],
            "id": 1,
            "fade_to_black": false
        },
        {
            "name": "Fade",
            "duration": 300,
            "hotkeys": [],
            "id": 2,
            "fade_to_black": false
        },
        {
            "name": "Fade",
            "duration": 300,
            "hotkeys": [],
            "id": 3,
            "fade_to_black": true
        }
    ],
    "transitions": [],
    "saved_projectors": [],
    "current_transition": "Fade",
    "transition_duration": 300,
    "preview_locked": false,
    "scaling_enabled": false,
    "scaling_level": 0,
    "scaling_off_x": 0.0,
    "scaling_off_y": 0.0,
    "virtual-camera": {
        "type2": 3
    },
    "modules": {
        "scripts-tool": [],
        "output-timer": {
            "streamTimerHours": 0,
            "streamTimerMinutes": 0,
            "streamTimerSeconds": 30,
            "recordTimerHours": 0,
            "recordTimerMinutes": 0,
            "recordTimerSeconds": 30,
            "autoStartStreamTimer": false,
            "autoStartRecordTimer": false,
            "pauseRecordTimer": true
        },
        "auto-scene-switcher": {
            "interval": 300,
            "non_matching_scene": "",
            "switch_if_not_matching": false,
            "active": false,
            "switches": []
        }
    }
}

Anything else we should know?

No response

Reproduce the startup crash by replacing ~/Library/Application Support/obs-studio/basic/scenes/Untitled.json with the supplied contents, then trace OBS's scene-file loading during startup. Use the supplied log and crash reproduction to identify why this scene causes the application to exit; done means OBS starts without crashing and handles the file safely.