Scrapbook Factory 5 DVD cannot be read

Hello all. I just purchased Scrapbook Factory 5 today but I had some problem installing it as the installation DVD could not be read on my pc.
I don’t see anything after inserting it to my DVD-ROM. I inserted the ''Bonus Fonts and Graphics'' disk, but the contents of the dvd were seen.
Now, I tried putting installation DVD in on another computer but this time the Installation dvd was seen.
Why is this?
Is there a problem with the dvd-rom I have?
There could be no problem with the installation disk since it was able to run on other computers.
How should I resolve my problem?
