Gigapixel Crashing

Gigapixel crashes when starting, Windows 11, Nvidia 3090 RTX 24GB VRAM, re-installed gigapixel, no help, sfc /scannow found no issues. I tried to uninstall Gigapixel but Uninstall.exe can’t be found, and add/remove programs doesn’t even show a valid icon for gigapixel. Here’s the crash event:

Faulting application name: Topaz Gigapixel AI.exe, version:, time stamp: 0x63c98bd3
Faulting module name: ucrtbase.dll, version: 10.0.22621.608, time stamp: 0xf5fc15a3
Exception code: 0xc0000409
Fault offset: 0x000000000007f61e
Faulting process id: 0x0x43D0
Faulting application start time: 0x0x1D98A7A273B89DA
Faulting application path: E:\Program Files\Topaz Labs LLC\Topaz Gigapixel AI\Topaz Gigapixel AI.exe
Faulting module path: C:\WINDOWS\System32\ucrtbase.dll
Report Id: e4bff4d6-6d12-44dd-a2a8-11b7babef243
Faulting package full name:
Faulting package-relative application ID:

DeNoise still starts correctly, but Sharpen, Adjust, Studio, and JPEG to Raw, are also crashing when starting. All the Topaz uninstall entries have generic icons. This system was an upgrade from Windows 10 to 11 but “installing Windows 11 fresh” is absolutely not an option right now.