This happens when selecting the chords on the Main Track on both standalone and in my DAW (Studio One 7):
Process: Studio One [36470]
Path: /Applications/Studio One 7.app/Contents/MacOS/Studio One
Identifier: com.presonus.studioone2
Version: 7.1.1 Build 104411 (104411)
Code Type: X86-64 (Native)
Parent Process: launchd [1]
User ID: 501
Date/Time: 2025-06-01 11:02:38.2917 +0100
OS Version: macOS 15.5 (24F74)
Report Version: 12
Bridge OS Version: 9.5 (22P5072)
Anonymous UUID: 4BCB857D-70F1-EE28-AD73-EEEE62058CCB
Sleep/Wake UUID: 9847C374-8980-4267-90DA-920627C81E69
Time Awake Since Boot: 260000 seconds
Time Since Wake: 4462 seconds
System Integrity Protection: enabled
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000000
Exception Codes: 0x0000000000000001, 0x0000000000000000
VM Region Info: 0 is not in any region. Bytes before following region: 4416081920
REGION TYPE START - END [ VSIZE] PRT/MAX SHRMOD REGION DETAIL
UNUSED SPACE AT START
—>
__TEXT 107381000-108ccd000 [ 25.3M] r-x/r-x SM=COW /Applications/Studio One 7.app/Contents/MacOS/Studio One
Kernel Triage:
VM - (arg = 0x3) mach_vm_allocate_kernel failed within call to vm_map_enter
VM - (arg = 0x3) mach_vm_allocate_kernel failed within call to vm_map_enter
VM - (arg = 0x3) mach_vm_allocate_kernel failed within call to vm_map_enter
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 Scaler 3 Audio 0x136615808 Scaler::UI::Layout::ArrangeComponent::EditorMixerWrapper::rebuildClipDependentControls()::$_13::operator()(std::__1::vector<std::__1::shared_ptr, std::__1::allocator<std::__1::shared_ptr>> const&) const + 232
1 Scaler 3 Audio 0x136614a8d Scaler::UI::Layout::ArrangeComponent::EditorMixerWrapper::rebuildClipDependentControls() + 1309
2 Scaler 3 Audio 0x13661b09b Scaler::UI::Layout::ArrangeComponent::onSelectedItemsChanged(std::__1::shared_ptrScaler::Sequencer::Clip const&, bool) + 91
3 Scaler 3 Audio 0x1364a321c void Scaler::Sequencer::ISubject::notify<Scaler::UI::Utility::MultiSelectedItem<std::__1::shared_ptrScaler::Sequencer::Clip>::Observer>(std::__1::function<void (Scaler::UI::Utility::MultiSelectedItem<std::__1::shared_ptrScaler::Sequencer::Clip>::Observer*)>) + 92
4 Scaler 3 Audio 0x136498d9e Scaler::UI::Utility::MultiSelectedItem<std::__1::shared_ptrScaler::Sequencer::Clip>::addItem(std::__1::shared_ptrScaler::Sequencer::Clip const&, bool) + 286
5 Scaler 3 Audio 0x1366445fd Scaler::UI::Layout::ArrangerTrackViewComponent::changeListenerCallback(juce::ChangeBroadcaster*) + 589
6 Scaler 3 Audio 0x136296307 juce::ChangeBroadcaster::callListeners() + 631
7 Scaler 3 Audio 0x1362991c9 juce::MessageQueue::runLoopCallback() + 57
8 CoreFoundation 0x7ff8130dec00 CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION + 17
9 CoreFoundation 0x7ff8130deba2 __CFRunLoopDoSource0 + 157
10 CoreFoundation 0x7ff8130de95d __CFRunLoopDoSources0 + 203
11 CoreFoundation 0x7ff8130dd5c6 __CFRunLoopRun + 973
12 CoreFoundation 0x7ff8130dcbc2 CFRunLoopRunSpecific + 536
13 HIToolbox 0x7ff81ebbd0d4 RunCurrentEventLoopInMode + 281
14 HIToolbox 0x7ff81ebbfe60 ReceiveNextEventCommon + 188
15 HIToolbox 0x7ff81ed4919a _BlockUntilNextEventMatchingListInModeWithFilter + 63
16 AppKit 0x7ff816b43e2d _DPSNextEvent + 912
17 AppKit 0x7ff8175d1d27 -[NSApplication(NSEventRouting) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 1263
18 AppKit 0x7ff816b34f19 -[NSApplication run] + 610
19 Foundation 0x7ff81420ea95 -[NSObject(NSThreadPerformAdditions) performSelector:onThread:withObject:waitUntilDone:modes:] + 1017
20 Foundation 0x7ff81420e53c -[NSObject(NSThreadPerformAdditions) performSelectorOnMainThread:withObject:waitUntilDone:] + 121
21 cclgui 0x10d7ec3f6 0x10d43f000 + 3855350
22 Studio One 0x1074c85a1 0x107381000 + 1340833
23 Studio One 0x1074c8e82 0x107381000 + 1343106
24 dyld 0x7ff812c50530 start + 3056