Continuous same errors opening .dmg files

Do not enough about this specific Application to offer any meaningful assistance.

But from this link https://audirvana.com/assistance/#minimum-requirements - it appears " OS X 10.13 (High Sierra) or later " is in question as to whether this Application is even compatible with Monterey macOS 12

Perhaps something in their Forums may offer more details

https://community.audirvana.com/

Are you using Keka or 7Zip to open the .dmg file or a custom script (where did the script come from)? Both are being referenced, but I'm not sure if that means the app which was used to create the .dmg file or the app being used to open it now. If you are using Keka or 7Zip or a script to open the .dmg file, then try using the default macOS DiskImageMounter instead.

@P. Phillips is correct that Monterey may no longer be compatible with the software or even the older style .dmg archive. I have seen some reports on these forums that Monterey will not open some older .dmg files (usually because they were encrypted, but details a sketchy anyway).

I definitely would not expect an older version of app to work with Monterey, so make sure the app is compatible with Monterey before trying to install it. Same thing applies if you are now using an M1/M2 Mac with Apple Silicon.

Where did you acquire this .dmg file? It is dangerous to get files from anywhere except directly from the developer or official locations the app developer has approved. There is also a possibility this .dmg is just damaged or maybe even was assembled incorrectly by the developer.

It's not Monterey. I had to download the Audirvana Studio dmg twice before getting a viable copy. Once I had it, DiskImageMounter opened it without a problem.

You're welcome.