the error prompt when i try to install netbackup 7.5 on server 2008

Hi ,All

When i try to install netbackup 7.5 on server 2008 which hardware and os both are 64bit .there is a error hint occur which is "Cloud not resolve product code from MSI,Wrong MSI file speified",, I run out of all my idea .but the proble still there .is there a someone who meet this before or have a any idea ?that would be very appreciated !!!alao please see the attachment  for reference.