I've been using Fusion for quite some time on my Mac (Mavericks 10.9.4). Recently, when I went to launch Fusion 6.4, I got this message:
Unable to run VMWare Fusion
VMware Fusion is damaged and could not be repaired. Please move the VMWare Fusion application to the Trash and reinstall VMWare Fusion
So, I deleted the Fusion application, and downloaded it again. When I installed it, I got the same message. Okay, I figured it must be one of those "hidden" files you don't see that must be corrupt, so I used App Zapper to get rid of Fusion and all associated files; emptied the trash, so Fusion was gone, gone, gone. Downloaded a new image, same thing! No matter what I do, I can't use Fusion. Suggestions?