My host operating system is Linux Mint 17.1 & Vmware workstation version is 11.1 . When I first installed cs50 appliance with vmware workstation 11.0 ,the problem was,I can't install vmware tools (which is important to run appliance smoothly) as there was error mounting CD drive . But magically , after repeatedly trying , CD drive mounts successfully . Now after updating vmware workstation to 11.1 . I'm encountering same problem again .Here's the screenshot.