Can't open Panasonic G9 High res file. Anyone else have this issue?

[PCR]

My new Panasonic G9 camera can make high res images with very large files (100mb+) and it labels them as RW2, just like the camera raw file designation.  I can open it in Luminar 3, Photos, and in the Silkypix, software that are with the camera, but it will not open in my Mac using Preview, Xee^2, or in Affinity, _1010387.RW2

Any thoughts as to why I am having such difficulty opening these files?  Please see the attached a sample test file.

_1010387.RW2

[v_kyr]

I think the Affinity RAW engine doesn't yet support the G9, take a look here ...

• Supported Raw Cameras (1.6.x)

... but since Mac OS High Sierra and Mojave do ...

•  macOS Mojave and iOS 12
•  macOS High Sierra and iOS 11

you can switch the Affinity RAW engine instead to the Apple RAW one in the Affinity Photo Assistence Manager and try out if that then works for your highres RAWs.

[PCR]

v-Kyr

Thanks for the suggestion.  I tried it by changing the Raw engine to the Apple one but still, my high res image opened as a gray field with no image.  I went back and made sure the Affinity could open the regular out of camera rw2 file, and it did with no problems.  So I guess, thee is something in the High Res rw2 file that Affinity and other software is not liking. 

Again, thanks,

PCR