Problem in Installing Business Objects XI in Red Hat Enterprise Linux

I have encountered a problem during installation of Business Object XI in Red Hat Enterprise Linux. The ff errors are:

Error occured during install:

problem while unzipping: pkg.apps
/bin/tar: Skipping to next header
gzip: /media/cdrom/pkg/rep00000.tar.gz: invalid compressed data–crc error
gzip: /media/cdrom/pkg/rep00000.tar.gz: invalid compressed data–length error

/bin/tar: Error exit delayed from previous errors problem while unzipping: pkg.Report
cp: ‘wpatch’ and ‘/tmp/BusinessObjects/setup/wpatch’ are the same file
Problem creating /tmp/BusinessObjects/setup/wpatch.

Please kindly help me on this… Thanks