Confirmed here on MacOS too. Crash log:
-------------------------------------
Translated Report (Full Report Below)
-------------------------------------
Process:               HISE [88903]
Path:                  /Users/USER/*/HISE.app/Contents/MacOS/HISE
Identifier:            com.hartinstruments.HISEStandalone
Version:               4.1.0 (4.1.0)
Code Type:             ARM-64 (Native)
Parent Process:        launchd [1]
User ID:               501
Date/Time:             2025-07-25 19:24:55.1964 +0100
OS Version:            macOS 15.5 (24F74)
Report Version:        12
Anonymous UUID:        CCB1FD68-DBB1-BA98-C0F7-4D9C638A5DAA
Sleep/Wake UUID:       DF6D33B0-69EB-4F03-953C-4FD81CFEA42C
Time Awake Since Boot: 660000 seconds
Time Since Wake:       1429 seconds
System Integrity Protection: enabled
Crashed Thread:        16  Convert Samplemaps to Wavetable
Exception Type:        EXC_BAD_ACCESS (SIGSEGV)
Exception Codes:       KERN_INVALID_ADDRESS at 0x0000000000000008
Exception Codes:       0x0000000000000001, 0x0000000000000008
Termination Reason:    Namespace SIGNAL, Code 11 Segmentation fault: 11
Terminating Process:   exc handler [88903]
VM Region Info: 0x8 is not in any region.  Bytes before following region: 4298080248
      REGION TYPE                    START - END         [ VSIZE] PRT/MAX SHRMOD  REGION DETAIL
      UNUSED SPACE AT START
--->  
      __TEXT                      1002f8000-102164000    [ 30.4M] r-x/r-x SM=COW  /Users/USER/*/HISE.app/Contents/MacOS/HISE
Thread 0:: JUCE Message Thread Dispatch queue: com.apple.main-thread
0   HISE                          	       0x101b04c94 juce::blurSingleChannelImage(juce::Image&, int) + 416
1   HISE                          	       0x101b049c8 juce::DropShadow::drawForImage(juce::Graphics&, juce::Image const&) const + 212
2   HISE                          	       0x101b0485c juce::DropShadowEffect::applyEffect(juce::Image&, juce::Graphics&, float, float) + 164
3   HISE                          	       0x101b4e8cc juce::Component::paintEntireComponent(juce::Graphics&, bool) + 580
4   HISE                          	       0x101b39bf8 juce::Component::paintComponentAndChildren(juce::Graphics&) + 1172
5   HISE                          	       0x101b39bf8 juce::Component::paintComponentAndChildren(juce::Graphics&) + 1172
6   HISE                          	       0x101b39bf8 juce::Component::paintComponentAndChildren(juce::Graphics&) + 1172
7   HISE                          	       0x101b39bf8 juce::Component::paintComponentAndChildren(juce::Graphics&) + 1172
8   HISE                          	       0x101b39bf8 juce::Component::paintComponentAndChildren(juce::Graphics&) + 1172
9   HISE                          	       0x101b39bf8 juce::Component::paintComponentAndChildren(juce::Graphics&) + 1172
10  HISE                          	       0x101b39bf8 juce::Component::paintComponentAndChildren(juce::Graphics&) + 1172
11  HISE                          	       0x101b39bf8 juce::Component::paintComponentAndChildren(juce::Graphics&) + 1172
12  HISE                          	       0x101b39bf8 juce::Component::paintComponentAndChildren(juce::Graphics&) + 1172
13  HISE                          	       0x101b39bf8 juce::Component::paintComponentAndChildren(juce::Graphics&) + 1172
14  HISE                          	       0x101b39bf8 juce::Component::paintComponentAndChildren(juce::Graphics&) + 1172
15  HISE                          	       0x101b39bf8 juce::Component::paintComponentAndChildren(juce::Graphics&) + 1172
16  HISE                          	       0x101b39bf8 juce::Component::paintComponentAndChildren(juce::Graphics&) + 1172
17  HISE                          	       0x101b39bf8 juce::Component::paintComponentAndChildren(juce::Graphics&) + 1172
18  HISE                          	       0x101b4e62c juce::ComponentPeer::handlePaint(juce::LowLevelGraphicsContext&) + 308
19  HISE                          	       0x101b46d20 juce::JuceNSViewClass::drawRect(objc_object*, objc_selector*, CGRect) + 340
20  AppKit                        	       0x196ed6d18 _NSViewDrawRect + 160
21  AppKit                        	       0x1978ecc74 -[NSView _recursive:displayRectIgnoringOpacity:inContext:stopAtLayerBackedViews:] + 1084
22  AppKit                        	       0x196ed670c -[NSView(NSLayerKitGlue) _drawViewBackingLayer:inContext:drawingHandler:] + 536
23  AppKit                        	       0x197593a64 -[NSViewBackingLayer drawInContext:] + 56
24  AppKit                        	       0x197209ab8 0x196d89000 + 4721336
25  AppKit                        	       0x1971f1fdc 0x196d89000 + 4624348
26  AppKit                        	       0x1971ed150 0x196d89000 + 4604240
27  AppKit                        	       0x1971f1cac 0x196d89000 + 4623532
28  AppKit                        	       0x1971ef6b0 0x196d89000 + 4613808
29  AppKit                        	       0x19727a574 0x196d89000 + 5182836
30  AppKit                        	       0x19727abdc 0x196d89000 + 5184476
31  AppKit                        	       0x197593690 -[NSViewBackingLayer display] + 1268
32  QuartzCore                    	       0x19bf0e0b4 CA::Layer::display_if_needed(CA::Transaction*) + 748
33  QuartzCore                    	       0x19c0a2464 CA::Context::commit_transaction(CA::Transaction*, double, double*) + 492
34  QuartzCore                    	       0x19beef3a8 CA::Transaction::commit() + 644
35  AppKit                        	       0x196ee6024 __62+[CATransaction(NSCATransaction) NS_setFlushesWithDisplayLink]_block_invoke + 272
36  AppKit                        	       0x19792f4d4 ___NSRunLoopObserverCreateWithHandler_block_invoke + 64
37  CoreFoundation                	       0x192e9d098 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 36
38  CoreFoundation                	       0x192e9cf80 __CFRunLoopDoObservers + 536
39  CoreFoundation                	       0x192e9c5f0 __CFRunLoopRun + 784
40  CoreFoundation                	       0x192e9bc58 CFRunLoopRunSpecific + 572
41  HIToolbox                     	       0x19e93027c RunCurrentEventLoopInMode + 324
42  HIToolbox                     	       0x19e9334e8 ReceiveNextEventCommon + 676
43  HIToolbox                     	       0x19eabe484 _BlockUntilNextEventMatchingListInModeWithFilter + 76
44  AppKit                        	       0x196dc3ab4 _DPSNextEvent + 684
45  AppKit                        	       0x1977625b0 -[NSApplication(NSEventRouting) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 688
46  AppKit                        	       0x196db6c64 -[NSApplication run] + 480
47  HISE                          	       0x100312de0 main + 296
48  dyld                          	       0x192a12b98 start + 6076
Thread 1:
0   libsystem_pthread.dylib       	       0x192dadb6c start_wqthread + 0
Thread 2:: Sample Loading Thread
0   libsystem_kernel.dylib        	       0x192d743cc __psynch_cvwait + 8
1   libsystem_pthread.dylib       	       0x192db30e0 _pthread_cond_wait + 984
2   libc++.1.dylib                	       0x192ce3330 std::__1::condition_variable::__do_timed_wait(std::__1::unique_lock<std::__1::mutex>&, std::__1::chrono::time_point<std::__1::chrono::system_clock, std::__1::chrono::duration<long long, std::__1::ratio<1l, 1000000000l>>>) + 104
3   HISE                          	       0x101a2ef30 juce::WaitableEvent::wait(int) const + 152
4   HISE                          	       0x10162748c hise::SampleThreadPool::run() + 60
5   HISE                          	       0x101a411a4 juce::threadEntryProc(void*) + 284
6   libsystem_pthread.dylib       	       0x192db2c0c _pthread_start + 136
7   libsystem_pthread.dylib       	       0x192dadb80 thread_start + 8
Thread 3:: Javascript Thread
0   libsystem_kernel.dylib        	       0x192d743cc __psynch_cvwait + 8
1   libsystem_pthread.dylib       	       0x192db30e0 _pthread_cond_wait + 984
2   libc++.1.dylib                	       0x192ce3330 std::__1::condition_variable::__do_timed_wait(std::__1::unique_lock<std::__1::mutex>&, std::__1::chrono::time_point<std::__1::chrono::system_clock, std::__1::chrono::duration<long long, std::__1::ratio<1l, 1000000000l>>>) + 104
3   HISE                          	       0x101a2ef30 juce::WaitableEvent::wait(int) const + 152
4   HISE                          	       0x100d6626c hise::JavascriptThreadPool::run() + 92
5   HISE                          	       0x101a411a4 juce::threadEntryProc(void*) + 284
6   libsystem_pthread.dylib       	       0x192db2c0c _pthread_start + 136
7   libsystem_pthread.dylib       	       0x192dadb80 thread_start + 8
Thread 4:: caulk.messenger.shared:17
0   libsystem_kernel.dylib        	       0x192d70bb0 semaphore_wait_trap + 8
1   caulk                         	       0x19e417cc8 caulk::semaphore::timed_wait(double) + 224
2   caulk                         	       0x19e417b70 caulk::concurrent::details::worker_thread::run() + 32
3   caulk                         	       0x19e417844 void* caulk::thread_proxy<std::__1::tuple<caulk::thread::attributes, void (caulk::concurrent::details::worker_thread::*)(), std::__1::tuple<caulk::concurrent::details::worker_thread*>>>(void*) + 96
4   libsystem_pthread.dylib       	       0x192db2c0c _pthread_start + 136
5   libsystem_pthread.dylib       	       0x192dadb80 thread_start + 8
Thread 5:: caulk.messenger.shared:high
0   libsystem_kernel.dylib        	       0x192d70bb0 semaphore_wait_trap + 8
1   caulk                         	       0x19e417cc8 caulk::semaphore::timed_wait(double) + 224
2   caulk                         	       0x19e417b70 caulk::concurrent::details::worker_thread::run() + 32
3   caulk                         	       0x19e417844 void* caulk::thread_proxy<std::__1::tuple<caulk::thread::attributes, void (caulk::concurrent::details::worker_thread::*)(), std::__1::tuple<caulk::concurrent::details::worker_thread*>>>(void*) + 96
4   libsystem_pthread.dylib       	       0x192db2c0c _pthread_start + 136
5   libsystem_pthread.dylib       	       0x192dadb80 thread_start + 8
Thread 6:: com.apple.audio.IOThread.client
0   libsystem_kernel.dylib        	       0x192d70bbc semaphore_wait_signal_trap + 8
1   caulk                         	       0x19e4342f8 caulk::mach::semaphore::wait_signal_or_error(caulk::mach::semaphore&) + 36
2   CoreAudio                     	       0x195ca2f58 HALC_ProxyIOContext::IOWorkLoop() + 5276
3   CoreAudio                     	       0x195ca13a8 invocation function for block in HALC_ProxyIOContext::HALC_ProxyIOContext(unsigned int, unsigned int) + 172
4   CoreAudio                     	       0x195e4b37c HALC_IOThread::Entry(void*) + 88
5   libsystem_pthread.dylib       	       0x192db2c0c _pthread_start + 136
6   libsystem_pthread.dylib       	       0x192dadb80 thread_start + 8
Thread 7:
0   libsystem_kernel.dylib        	       0x192d70c34 mach_msg2_trap + 8
1   libsystem_kernel.dylib        	       0x192d833a0 mach_msg2_internal + 76
2   libsystem_kernel.dylib        	       0x192d79764 mach_msg_overwrite + 484
3   libsystem_kernel.dylib        	       0x192d70fa8 mach_msg + 24
4   CoreMIDI                      	       0x1af42deac XServerMachPort::ReceiveMessage(int&, void*, int&) + 104
5   CoreMIDI                      	       0x1af44f740 MIDIProcess::MIDIInPortThread::Run() + 148
6   CoreMIDI                      	       0x1af44476c CADeprecated::XThread::RunHelper(void*) + 48
7   CoreMIDI                      	       0x1af44ee44 CADeprecated::CAPThread::Entry(CADeprecated::CAPThread*) + 96
8   libsystem_pthread.dylib       	       0x192db2c0c _pthread_start + 136
9   libsystem_pthread.dylib       	       0x192dadb80 thread_start + 8
Thread 8:: Directory Scanner
0   libsystem_kernel.dylib        	       0x192d743cc __psynch_cvwait + 8
1   libsystem_pthread.dylib       	       0x192db30e0 _pthread_cond_wait + 984
2   libc++.1.dylib                	       0x192ce3330 std::__1::condition_variable::__do_timed_wait(std::__1::unique_lock<std::__1::mutex>&, std::__1::chrono::time_point<std::__1::chrono::system_clock, std::__1::chrono::duration<long long, std::__1::ratio<1l, 1000000000l>>>) + 104
3   HISE                          	       0x101a2ef30 juce::WaitableEvent::wait(int) const + 152
4   HISE                          	       0x101a2eb90 juce::TimeSliceThread::run() + 128
5   HISE                          	       0x101a411a4 juce::threadEntryProc(void*) + 284
6   libsystem_pthread.dylib       	       0x192db2c0c _pthread_start + 136
7   libsystem_pthread.dylib       	       0x192dadb80 thread_start + 8
Thread 9:
0   libsystem_pthread.dylib       	       0x192dadb6c start_wqthread + 0
Thread 10:
0   libsystem_pthread.dylib       	       0x192dadb6c start_wqthread + 0
Thread 11:
0   libsystem_pthread.dylib       	       0x192dadb6c start_wqthread + 0
Thread 12:
0   libsystem_pthread.dylib       	       0x192dadb6c start_wqthread + 0
Thread 13:: com.apple.NSEventThread
0   libsystem_kernel.dylib        	       0x192d70c34 mach_msg2_trap + 8
1   libsystem_kernel.dylib        	       0x192d833a0 mach_msg2_internal + 76
2   libsystem_kernel.dylib        	       0x192d79764 mach_msg_overwrite + 484
3   libsystem_kernel.dylib        	       0x192d70fa8 mach_msg + 24
4   CoreFoundation                	       0x192e9de7c __CFRunLoopServiceMachPort + 160
5   CoreFoundation                	       0x192e9c798 __CFRunLoopRun + 1208
6   CoreFoundation                	       0x192e9bc58 CFRunLoopRunSpecific + 572
7   AppKit                        	       0x196ee77fc _NSEventThread + 140
8   libsystem_pthread.dylib       	       0x192db2c0c _pthread_start + 136
9   libsystem_pthread.dylib       	       0x192dadb80 thread_start + 8
Thread 14:: JUCE Timer
0   libsystem_kernel.dylib        	       0x192d743cc __psynch_cvwait + 8
1   libsystem_pthread.dylib       	       0x192db30e0 _pthread_cond_wait + 984
2   libc++.1.dylib                	       0x192ce3330 std::__1::condition_variable::__do_timed_wait(std::__1::unique_lock<std::__1::mutex>&, std::__1::chrono::time_point<std::__1::chrono::system_clock, std::__1::chrono::duration<long long, std::__1::ratio<1l, 1000000000l>>>) + 104
3   HISE                          	       0x101a2ef30 juce::WaitableEvent::wait(int) const + 152
4   HISE                          	       0x101abb2d4 juce::Timer::TimerThread::run() + 188
5   HISE                          	       0x101a411a4 juce::threadEntryProc(void*) + 284
6   libsystem_pthread.dylib       	       0x192db2c0c _pthread_start + 136
7   libsystem_pthread.dylib       	       0x192dadb80 thread_start + 8
Thread 15:: caulk::deferred_logger
0   libsystem_kernel.dylib        	       0x192d70bb0 semaphore_wait_trap + 8
1   caulk                         	       0x19e417cc8 caulk::semaphore::timed_wait(double) + 224
2   caulk                         	       0x19e417b70 caulk::concurrent::details::worker_thread::run() + 32
3   caulk                         	       0x19e417844 void* caulk::thread_proxy<std::__1::tuple<caulk::thread::attributes, void (caulk::concurrent::details::worker_thread::*)(), std::__1::tuple<caulk::concurrent::details::worker_thread*>>>(void*) + 96
4   libsystem_pthread.dylib       	       0x192db2c0c _pthread_start + 136
5   libsystem_pthread.dylib       	       0x192dadb80 thread_start + 8
Thread 16 Crashed:: Convert Samplemaps to Wavetable
0   HISE                          	       0x10099c410 hise::getMemoryBlockFromWavetableData(juce::ValueTree const&, int) + 200
1   HISE                          	       0x10099b380 hise::WavetableSound::WavetableSound(juce::ValueTree const&, hise::Processor*) + 512
2   HISE                          	       0x1009faf30 hise::SampleMapToWavetableConverter::rebuildPreviewBuffersInternal() + 1904
3   HISE                          	       0x100440588 std::__1::__function::__func<hise::WavetableConverterDialog::loadSampleMap(juce::ValueTree const&)::'lambda'(), std::__1::allocator<hise::WavetableConverterDialog::loadSampleMap(juce::ValueTree const&)::'lambda'()>, void ()>::operator()() + 1292
4   HISE                          	       0x10044a2d4 std::__1::__function::__func<hise::WavetableConverterDialog::run()::'lambda'(std::__1::function<void ()>&), std::__1::allocator<hise::WavetableConverterDialog::run()::'lambda'(std::__1::function<void ()>&)>, bool (std::__1::function<void ()>&)>::operator()(std::__1::function<void ()>&) + 152
5   HISE                          	       0x100447994 hise::WavetableConverterDialog::run() + 684
6   HISE                          	       0x100533018 hise::DialogWindowWithBackgroundThread::LoadingThread::run() + 32
7   HISE                          	       0x101a411a4 juce::threadEntryProc(void*) + 284
8   libsystem_pthread.dylib       	       0x192db2c0c _pthread_start + 136
9   libsystem_pthread.dylib       	       0x192dadb80 thread_start + 8
Thread 16 crashed with ARM Thread State (64-bit):
    x0: 0x0000000000000000   x1: 0x0000000171c72768   x2: 0x00000000000120a9   x3: 0x0000000000000001
    x4: 0x0000000000000001   x5: 0x00000000c42499f4   x6: 0x00006000021bfe60   x7: 0x0000000000000000
    x8: 0x0000000101a2f58c   x9: 0x0000000171c72740  x10: 0x00000b0000000b02  x11: 0x0000010000000000
   x12: 0x00000000fffffffd  x13: 0x00000b0000000000  x14: 0x0000000000000b00  x15: 0x0000000000000000
   x16: 0x00000b0000000b00  x17: 0x00000b0000000b02  x18: 0x0000000000000000  x19: 0x0000000171c72c30
   x20: 0x0000000171c727f0  x21: 0x0000000171c72c30  x22: 0x0000000171c727e8  x23: 0x0000000171c72748
   x24: 0x0000000000000000  x25: 0x000000010881eea0  x26: 0x0000000108315c10  x27: 0x0000600003a460c8
   x28: 0x0000000108315d80   fp: 0x0000000171c727b0   lr: 0x000000010099c40c
    sp: 0x0000000171c72740   pc: 0x000000010099c410 cpsr: 0x60001000
   far: 0x0000000000000008  esr: 0x92000006 (Data Abort) byte read Translation fault
Binary Images:
       0x1002f8000 -        0x102163fff com.hartinstruments.HISEStandalone (4.1.0) <4b76ad00-b33f-3e12-95d5-2feb382eb5ed> /Users/USER/*/HISE.app/Contents/MacOS/HISE
       0x106d54000 -        0x106d5ffff libobjc-trampolines.dylib (*) <d02a05cb-6440-3e7e-a02f-931734cab666> /usr/lib/libobjc-trampolines.dylib
       0x1080f4000 -        0x10822ffff com.apple.audio.units.Components (1.14) <674f87bc-21a4-309b-9e43-c7ba1cd95d7b> /System/Library/Components/CoreAudio.component/Contents/MacOS/CoreAudio
       0x107e00000 -        0x107f8ffff offlinetransient.dylib (*) <2baf6788-5ef3-32ec-a76d-d5b6836f5b05> /Users/USER/*/offlinetransient.dylib
       0x141b90000 -        0x142227fff com.apple.AGXMetalG13X (327.5) <a459e0d8-5ddb-360f-817e-bc708b1711b0> /System/Library/Extensions/AGXMetalG13X.bundle/Contents/MacOS/AGXMetalG13X
       0x15e388000 -        0x15ec6bfff com.apple.audio.codecs.Components (7.0) <42d57795-e86d-36e5-9fae-f2ba92271fba> /System/Library/Components/AudioCodecs.component/Contents/MacOS/AudioCodecs
       0x196d89000 -        0x19821ac7f com.apple.AppKit (6.9) <5d0da1bd-412c-3ed8-84e9-40ca62fe7b42> /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit
       0x19beed000 -        0x19c2c0c7f com.apple.QuartzCore (1.11) <e0d9f378-dc87-33f8-93a5-3c62ad30ea19> /System/Library/Frameworks/QuartzCore.framework/Versions/A/QuartzCore
       0x192e21000 -        0x19335ffff com.apple.CoreFoundation (6.9) <df489a59-b4f6-32b8-9bb4-9b832960aa52> /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
       0x19e86d000 -        0x19eb73fdf com.apple.HIToolbox (2.1.1) <9286e29f-fcee-31d0-acea-2842ea23bedf> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HIToolbox.framework/Versions/A/HIToolbox
       0x192a0c000 -        0x192aa74cf dyld (*) <9cf0401a-a938-389e-a77d-9e9608076ccf> /usr/lib/dyld
               0x0 - 0xffffffffffffffff ??? (*) <00000000-0000-0000-0000-000000000000> ???
       0x192dac000 -        0x192db8a47 libsystem_pthread.dylib (*) <647b91fc-96d3-3bbb-af08-970df45257c8> /usr/lib/system/libsystem_pthread.dylib
       0x192d70000 -        0x192dab653 libsystem_kernel.dylib (*) <60485b6f-67e5-38c1-aec9-efd6031ff166> /usr/lib/system/libsystem_kernel.dylib
       0x192cc5000 -        0x192d51ff7 libc++.1.dylib (*) <875203a1-087b-33a6-93a5-928bb7e9114c> /usr/lib/libc++.1.dylib
       0x19e416000 -        0x19e43dddf com.apple.audio.caulk (1.0) <5ce1b98f-c512-379d-9a42-5cce5923bf9d> /System/Library/PrivateFrameworks/caulk.framework/Versions/A/caulk
       0x195aae000 -        0x1961e225f com.apple.audio.CoreAudio (5.0) <b2b97b04-6275-3031-8a89-be6105f1e8f3> /System/Library/Frameworks/CoreAudio.framework/Versions/A/CoreAudio
       0x1af3ef000 -        0x1af4a9d1f com.apple.audio.midi.CoreMIDI (2.0) <cf441ec3-9851-3874-8fe1-17d470031ea5> /System/Library/Frameworks/CoreMIDI.framework/Versions/A/CoreMIDI
External Modification Summary:
  Calls made by other processes targeting this process:
    task_for_pid: 0
    thread_create: 0
    thread_set_state: 0
  Calls made by this process:
    task_for_pid: 0
    thread_create: 0
    thread_set_state: 0
  Calls made by all processes on this machine:
    task_for_pid: 2
    thread_create: 0
    thread_set_state: 0