Russ,
I honestly can't understand why you are having trouble with the disc.
Okay.I looked on the original as in
My Computer
Drive D,,, Right Click
Choose Explore.
Saw
"Set up" under
Medium (as in Tiny, Small, Medium, Large, Gigantic.)
Next to
ISSCript9.
Also under Large is
instmsia and
instimiw and
Navigator City Navigator Europe V7.
I can't remember which of these "buttons" is needed to click to install.
I have done another copy of the disc and original and copy are the same.
Try that suggestion to see what is happening.
Hope it works out.
Pat
P.S. I have looked on the other discs and at the back of the insert of V8 it says you must have a previous veriion before you install. Not 100& sure if that was the same as for V7.