Encountered error when installing Corel Paint Shop Pro X

I was installing Corel Paint Shop Pro X on my Vista when this error displayed on my screen, see below. I tried re-installing the software but the same thing happened. I really don’t know where to look for the resolution so I want to ask the experts from this site instead.
Please help me! I need the software badly. Thanks.

CRC Error
CRC error: The file C:Program FilesCorelCorel Paint Shop Pro X – Installation FilesContent~1.cab doesn’t match the file in the setup’s .cab file. The medium from which you are running the setup may be corrupted; contact your software vendor.
