Error in installing iSpring pro 6 setup

Hi,
I downloaded iSpring pro 6 Setup but when I attempted to install this setup I encountered the following weird message. Can I get the resolution for the following issue? I really need an expert’s advice to resolve the error. Suggest me with step by step solution.
Bundle of thanks.

The cabinet file product.cab required for this installation is corrupt and cannot be used. This could indicate a network error, an error reading from the CD-ROM, or a problem with this package.
