You have a newer darwin.iso (from Fusion 10+). You need one from Fusion 6–8. These versions specifically support 10.8.3.
When the installation completes, the installer will ask you to restart the computer. Do not click restart immediately if you are using older tools —see troubleshooting below. mac os x mountain lion 10.8.3 vmware tools
Mountain Lion is infamous for causing kernel panics (freezing) during the installation of VMware Tools drivers. If your screen goes black or the VM hangs during installation, follow these steps: You have a newer darwin