Affinity Photo Mac: Astrophotography stack crashes if you specify calibration images

[jameshcox83]

1. Affinity Photo 2.5.5
2. MacOS Sequoia 15.0
3. Macbook Pro with Apple M1 Pro cpu 32g
4. Images from ZWO ASI678MM camera and they are monochrome 16 bit Fits format
5. I have images for luminance, red green, blue, darks, flats
6. I have about 50 images for each channel, 20 flats and 20 darks

What works fine:

1. Astrophotography stacking luminance alone (file>new astrophotography stack, crate a single file group of lights specified as luminance filter)
2. Astrophotography stacking any of r, g, b alone
3. Astrophotography stacking all luminance, r, g, b together using four file groups and specifying filter accordingly.

What crashes:

1. Stacking luminance and adding a file group classed as dark and adding my "darks" to that file group. Even a single dark in the second file group will crash it.
2. Stacking luminance and adding a file group classed as flat and adding my "flats" to that file group. Even a single light file in the second group will crash it.

What happens is that it starts to stack, and after some apparent progress on the progress bar, photo app simply crashes and wants to send a crash report to Apple.

I can provide the Apple crash report if useful.

Thoughts welcome.

Edited September 30 by jameshcox83

[jameshcox83]

Ah ... you need to add the darks and flat to the same file groups as the lights to make it work (I was adding dark and flat to their own file groups with no lights.)
I think an error message would be better than a crash though in the situation I described.

[NathanC]

Welcome to the forums @jameshcox83,

Could you possibly provide the full set of FITS files for each channel as well as your calibration frames so we can confirm if this file grouping crash can be replicated? The app shouldn't be crashing as you mentioned.

I've added a few sample Lights FITS to one file group, added a second file group and added the flat frames to the second group but the stack process didn't trigger a crash so perhaps it's related to the files so it would be great to confirm. I've provided a private upload link below.

https://www.dropbox.com/request/zaca2cbdtta7PRFuTmIh

Thanks!

[jameshcox83]

Thanks for getting back to me.

Luckily I can provoke it with one light and one calibration so you'll see some files from James Cox in your dropbox. I added a readme with the steps and the crash report. 

The files are 16 bit fits monochrome from an ASI678MM.

For the benefit of anyone else who comes here the steps were:
file>new astrophotography stack

Then

File group 1 filter = Luminance type = light frames add files = I chose the luminance folder

File group 2  filter = <left blank> type = Dark add files = I chose the calibration folder

Click stack - Photo crashes

 

Edited October 4 by jameshcox83

[NathanC]

No problem, feel free just to upload the full set of documents at it's current size as there isn't a specific limit i'm aware of.

[NathanC]

Hey @jameshcox83,

Thanks for sending over the files, I also appreciate you taking the time to write out the steps and provide the crash report. I can confirm i'm able to reproduce the crash following your steps, so i'll get this logged with the developers.

It appears to be triggered by not assigning a filter to the second group, leaving it blank triggers the crash.

[jameshcox83]

You're welcome, and thanks for letting me know.

[Affinity Info Bot]

The issue "Astro Persona Files panel- Stacking frames from multiple groups with no filter assigned triggers an app crash" (REF: AF-4471) has been fixed by the developers in the latest beta build (2.6.0.2831). The fix is planned for inclusion in the next customer release.
Customer beta builds are announced here and you can participate by following these instructions.
If you still experience this problem once you are using that build version (or later) please reply to this thread including @Affinity Info Bot to notify us.