Error 1722 - installing software on computer

I get the following message when trying to install the client on my comuter:

Error 1722. There is a problem with this Windows Installer package. A program run as part of the setup did not finish as expected. Contact your support personnel or package vendor. Action InstallVCRedist, location: c:\users\...\MSI6A5A.tmp, commandd: /Q

Trying to install on vista ultimate