Lots of crashes

I’m seeing a lot of crashes on PL4 (4.0.1 Build 44). They all seem to happen while working in crop. The manifestation is the same – the app just suddenly vanishes, and soon afterwards, a crash report appears.

PL3 didn’t have this problem as I recall. But working with PL4 this afternoon, I’ve had four crashes now.

What do you need from me to track this down?

Process: DXOPhotoLab4 [8607]
Path: /Applications/DXOPhotoLab4.app/Contents/MacOS/DXOPhotoLab4
Identifier: com.dxo.PhotoLab4
Version: 4.0.1 (4.0.1.44)
Code Type: X86-64 (Native)
Parent Process: ??? [1]
Responsible: DXOPhotoLab4 [8607]
User ID: 501

Date/Time: 2020-11-10 16:45:26.114 -0500
OS Version: Mac OS X 10.14.6 (18G6020)
Report Version: 12
Anonymous UUID: EF1B2F0F-3ED1-1CB2-76B2-A15F08389CA8

Time Awake Since Boot: 13000 seconds

System Integrity Protection: enabled

Crashed Thread: 0 Dispatch queue: com.apple.main-thread

Exception Type: EXC_CRASH (SIGSEGV)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY

Termination Signal: Segmentation fault: 11
Termination Reason: Namespace SIGNAL, Code 0xb
Terminating Process: DXOPhotoLab4 [8607]

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 com.apple.CoreGraphics 0x00007fff344c306f argb32_sample_argb32 + 1119
1 com.apple.CoreGraphics 0x00007fff344bf231 argb32_image_mark + 1463
2 com.apple.CoreGraphics 0x00007fff3446ef78 argb32_image + 1552
3 com.apple.CoreGraphics 0x00007fff3446e95f ripl_Mark + 22
4 com.apple.CoreGraphics 0x00007fff3446e934 RIPLayerBltImage + 1018
5 com.apple.CoreGraphics 0x00007fff3446e276 ripc_RenderImage + 228
6 com.apple.CoreGraphics 0x00007fff34461ef1 ripc_DrawImage + 812
7 com.apple.CoreGraphics 0x00007fff34461bb6 CGContextDelegateDrawImage + 41
8 com.apple.CoreGraphics 0x00007fff34461394 CGContextDrawImageWithOptions + 432
9 com.apple.CoreGraphics 0x00007fff344611cf CGContextDrawImage + 51
10 com.apple.AppKit 0x00007fff3177b1c7 __74-[NSImageRep drawInRect:fromRect:operation:fraction:respectFlipped:hints:]_block_invoke + 949
11 com.apple.AppKit 0x00007fff3177ac1f -[NSImageRep drawInRect:fromRect:operation:fraction:respectFlipped:hints:] + 976
12 com.apple.AppKit 0x00007fff31c88c2b __71-[NSImage drawInRect:fromRect:operation:fraction:respectFlipped:hints:]_block_invoke.1317 + 1007
13 com.apple.AppKit 0x00007fff316cb227 -[NSImage _usingBestRepresentationForRect:context:hints:body:] + 156
14 com.apple.AppKit 0x00007fff3177a09c -[NSImage drawInRect:fromRect:operation:fraction:respectFlipped:hints:] + 1436
15 com.apple.AppKit 0x00007fff317c94b3 -[NSImage drawInRect:fromRect:operation:fraction:] + 81
16 com.dxo.PhotoLab.framework 0x000000010ffe2e1f 0x10fe67000 + 1555999
17 com.apple.AppKit 0x00007fff3173f21e _NSViewDrawRect + 66
18 com.apple.AppKit 0x00007fff3173daac -[NSView(NSInternal) _recursive:displayRectIgnoringOpacity:inContext:shouldChangeFontReferenceColor:stopAtLayerBackedViews:] + 1627
19 com.apple.AppKit 0x00007fff3173d43f __46-[NSView(NSLayerKitGlue) drawLayer:inContext:]block_invoke + 192
20 com.apple.AppKit 0x00007fff3173d19c -[NSView(NSLayerKitGlue) drawViewBackingLayer:inContext:drawingHandler:] + 1720
21 com.apple.QuartzCore 0x00007fff3eabde02 CABackingStoreUpdate
+ 577
22 com.apple.QuartzCore 0x00007fff3eb1fa0d invocation function for block in CA::Layer::display
() + 53
23 com.apple.QuartzCore 0x00007fff3eabd020 -[CALayer _display] + 1830
24 com.apple.AppKit 0x00007fff3173c74e _NSBackingLayerDisplay + 528
25 com.apple.AppKit 0x00007fff31720c4f -[_NSViewBackingLayer display] + 811
26 com.apple.QuartzCore 0x00007fff3eabc551 CA::Layer::display_if_needed(CA::Transaction*) + 627
27 com.apple.QuartzCore 0x00007fff3eaaa7c6 CA::Context::commit_transaction(CA::Transaction*) + 342
28 com.apple.QuartzCore 0x00007fff3eaa9ea6 CA::Transaction::commit() + 596
29 com.apple.QuartzCore 0x00007fff3eaa9ba6 CA::Transaction::observer_callback(__CFRunLoopObserver*, unsigned long, void*) + 66
30 com.apple.CoreFoundation 0x00007fff3407e5b8 CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION + 23
31 com.apple.CoreFoundation 0x00007fff3407e4ed __CFRunLoopDoObservers + 451
32 com.apple.CoreFoundation 0x00007fff34020d3b __CFRunLoopRun + 1431
33 com.apple.CoreFoundation 0x00007fff34020552 CFRunLoopRunSpecific + 455
34 com.apple.HIToolbox 0x00007fff3327f1ab RunCurrentEventLoopInMode + 292
35 com.apple.HIToolbox 0x00007fff3327eee5 ReceiveNextEventCommon + 603
36 com.apple.HIToolbox 0x00007fff3327ec76 _BlockUntilNextEventMatchingListInModeWithFilter + 64
37 com.apple.AppKit 0x00007fff3161677d _DPSNextEvent + 1135
38 com.apple.AppKit 0x00007fff3161546b -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 1361
39 com.dxo.PhotoLab4 0x000000010fd122b4 0x10fcdc000 + 221876
40 com.apple.AppKit 0x00007fff3160f588 -[NSApplication run] + 699
41 com.apple.AppKit 0x00007fff315feac8 NSApplicationMain + 777
42 libdyld.dylib 0x00007fff5ffa33d5 start + 1

I have also had a few crashes with PL4 (4.0.1.44).
OS is Mojave 10.14.6 on an iMac 2017 with i7 4.2 GHz and 16 GB RAM.
Happened when working with cropped image.