Photo 1.8.4 - Crashes opening any file on Mac OS Mojave

[signalfading]

Hello,

Since the most recent 1.8.4 update, I'm unable to open any file without Affinity Photo immediately crashing running under MacOS Mojave. The file type doesn't seem to matter. I've tried .jpg, .CR2, and .AffinityPhoto files. Crash reporter says:

Crashed Thread:        8  Dispatch queue: com.apple.root.utility-qos

Exception Type:        EXC_ARITHMETIC (SIGFPE)
Exception Codes:       EXC_I386_DIV (divide by zero)
Exception Note:        EXC_CORPSE_NOTIFY

Termination Signal:    Floating point exception: 8
Termination Reason:    Namespace SIGNAL, Code 0x8
Terminating Process:   exc handler [4699]

Luckily, I can use the iPad version. It also happens with any process attempting to open an image, like an HDR merge. As soon as you specify the 3 images and click ok, it crashes.

Any help would be greatly appreciated!

[MEB]

Hi @signalfading
Welcome to Affinity Forums
Can you attach the full crash report please? Press and hold alt then drag the icon from the crash report title bar to your desktop to create a copy of the report, then attach it here. Thanks.

[signalfading]

Full crash report attached below!

Affinity Photo_2020-08-24-074115_speck.crash

[MEB]

Hi signalfading,
Please go to Affinity Preferences, Performance section and untick Enable Metal compute acceleration. Does it crash with Metal acceleration disabled?

[signalfading]

This worked. I'm now able to open images. Thank you!