I'm having this problem right now. I upgraded my astrophotography facilities to an MSI i5 USB 3 SSD laptop PC, and fronted the task of installing softwares for all my capture devices. I use PHD2 software for autoguiding with a Titan videocam on an 80mm f/11 refractor, and Artemis software for capture with an Atik 428EX on a Meade 7" ED f/9 refractor.
I downloaded and installed the Atik CAPTURE package and, though Artemis and Dawn processing software performed correctly, PHD2 was not able to start the Titan, delivering a DLL error message: "Cannot load Atik camera DLL ArtemisHSC.dll.
I have also found a discussion of this error dated 2020, but no solution was issued, not even by Atik technical team. I don't find an answer to your question as well.
So, I remain with many error claims, but without a solution...I DO BELIEVE ATIK SHOULD ADDRESS THE ISSUE!!!
Thank you.
Best
Cesco