Sounds like your download is incomplete. You can use the md5sums on the download page to verify and redownload if they don't match.
That is what I thought - thanks for the help.
After a successful installation, I tried to re-install, then got this message.
I ran md5sum VMware-Workstation-6.5.1...
Then sh VMware-Workstation-6.5.1...
And install worked.