.img does not match .sub error

[Kikineko]

Hi,
I already searched for this and I only came up with questions about ccd, img and sub files in general.

I got a certain city building game where you play as the emperor of Rome (number III to be exact) but I'm getting an error.

It'd be easier if I could just get all three files into an iso and mount them on a virtual drive but I tried Daemon and of corse that doesn't work so I downloaded CloneCD.

The problem is when I put the .ccd file into CloneCD and try to burn I get an ".img does not match .sub file" error.

I've been researching this for a hour and I'm just hoping my precious time and bandwith wasn't wasted on this download.

Thanks for the help.