Flats processing issue with Mac OS ARM M4

[Paul Homer]

I created 7 PNG flats and selected Replace Checked by Master Flat (with no flat darks).
Normally the original files are removed from the screen but in this case they aren't.
The binning shows Conv failure! with no other details and the master has a weird exponential format.
This only happens with PNG files.

[han.k]

Hi Paul,

I tested it here with PNG files. Both monochrome and colour png's converts normal. The only problem is it ask to override. It must be the png format of your files. Can you share one file for testing?

Han

[Paul Homer]

Han,

I tested this file on both Mac Intel and ARM versions and both failed when trying to analyse.

I was unable to attach it due to size so providing a link.

https://www.dropbox.com/scl/fi/w40fy7kbsfbkmrphdmpov/IMGP0163.png?rlkey=lphcyxtnt5hd221d91d2rm5bu&dl=0

[han.k]

Hi Paul,

I have tested it on my Windows machine and a Mac with an M4. The files converts but it takes ages. The PNG routine I'm using is not so sufficient but the file is 48 bit colour with color profile embedded which seems to contribute. I can not explain why it not converts on your machine. But the files should be at least mono to work properly. In colour the original individual pixel information is lost by deBayering. You better stick to the original raw or fits format.