Clone Cd - Wrong File Format?

[Graviteee]

I go to

1. Copy CD
2. Choose my CD Reader.
3. Then it has Data CD Audio CD... etc etc. I do game CD cause im burning starcraft, then i do 4x even tho its a 8x burner just to make sure it doesn't stuff up. Then it does whatever then writes it onto the CD, creates an image first i think.
5. Once its done i click ok for succesfully completed, then go to load it up once i have placed it in my normal cd rom and it loads and takes ages then a box comes up saying the cd is either corrupted or it is the wrong file format? It's happened twice once on 8x and once on 4x.

Can someone help me?