As a first step of troubleshooting this issue, please ensure the checksum of the downloaded installation package matches the one shown on VMware's download page.
André
In case you're wondering what checksum André is talking about have a look at the image below from the download page.
VMware-workstation-full-9.0.1-894247.exe File size:426M
MD5SUM:dc3f15d6c5fc153b7f91405e4d9a2596
SHA1SUM:43ff404b5045de012fb275687f5e93887fda86c0
Information about MD5 checksums and SHA1 checksums .
(Click image to enlarge.)