Not a valid win32 application?

[Sway]

No, it doesn't.
What is this image you have mounted? How did you get it?
Try to mount any other image.

[Subsonic]

A vista32 compatible game given to me by a friend.

I’m not sure what was used to create it.

I was told to either use Alcohol or Daemon tools to mount the image. I read that Alcohol has issues under vista, so decided to give DT a go. Although the instructions my friend gave used Alcohol as an example.

No I haven’t tried mounting anything else yet.

[Sway]

So I cannot help you, 'cause it's not DAEMON Tools problem.
Maybe your game is compatible with Windows Vista, but not with Service Pack 2.

[seagull571]

I turned out to be the download file size for me too.
After several retrys I never did manage to get a version that worked. A friend has since burned the ISO onto disk for me, so its not a problem.

I could suggest a possible issue with the daemon tools download server? as I have NEVER come across this issue with any other download.