DeepSkyStacker Keeps Crashing!!! (With Video!)

Hi all and thank you for your time. 

I have DeepSkyStacker version 4.2.6 (64-Bit) on my M1 iMac and Intel i5 MacBook Pro (the same problem occurs on both) and every time I try to stack, the application crashes with no prior signs or errors. I also downloaded version 4.2.2 but for some reason that does not recognise that i have .CR3 files on my SD card, but recognises .JPEGS - All my frames are RAW so my only option is V 4.2.6? 

Please watch the Imgur Link below to see the problem; I don't think it has anything to do with the fact I have brought it to my MacBook (with the software 'Porting Kit'), as PIPP, Autostakkert and Registax work, even though they're native WindowsOS apps, much like DeepSkyStacker. 

https://imgur.com/a/vqvEab6

Any help is greatly appreciated, thank you and clear skies to all