I cannot get any photo (PNG or JPG) with an embedded color profile of sRGB IEC61966-2.1 to output as a PNG; A.I. Gigapixel 3.0.3, crashes every time. If the original photo was saved without a color profile, it outputs to a PNG just fine.
I can get Gigapixel 3.0.3, with said color profile, to output as a JPG or TIFF without incident.
Gigapixel 3.0.3 can output a photo, that was saved as a TIFF, to a PNG, but the resulting PNG is stripped of its Color Profile. All this happens whether, the original photo was saved from Corel PhotoPaint, Photoshop CS3, or Afinity Photo. This happens whether "Use Deducted Graphics Processing" is checked or not checked.
Topaz Studio Ver: 3.0.3
Operating System: Windows 10 (10.0)
Graphics Hardware: GeForce GTX 1060 6GB/PCIe/SSE2
OpenGL Driver: 3.3.0 NVIDIA 417.71
CPU RAM (MB): 16241
VRAM Total, Used: 6144, 5512
Preview Limit (Pixels): 7804
Processor Intel(R) Core(TM) i7-8700K CPU @ 3.70GHz, 3696 Mhz, 6 Core(s), 12 Logical Processor(s)
BaseBoard Product ROG MAXIMUS X HERO (WI-FI AC)
Installed Physical Memory (RAM) 16.0 GB
Total Physical Memory 15.9 GB
Available Physical Memory 8.36 GB
Total Virtual Memory 31.9 GB
Available Virtual Memory 19.7 GB
Page File Space 16.0 GB
In response to Margaret, try processing a PNG without an embedded color profile.