Failure to install the update of the Antivirus Antispyware software

I received an error message when attempting to install the update for the VIPRE Antivirus Anti spyware software. The first message I received was to update the software. The software also is my Personal Firewall. Please help to solve this problem.

Error:
New software has been downloaded and it is ready to be installed. When should we install the software?
