Could you please attach a screen shot for this problem? Also, please attach Fusion support bundle.It could be gathered via Fusion Help->Collect Support Information.Thanks a lot
You need to go into the system preferences, and then security and preferences, from there you should see the ability to open Fusion 10, which was blocked by the Mac OS. You will only need to do this once, and from now on you should be good to go.
You will need your admin password for Mac OS.
Hope this helps :-)
are you trying to start FUSION or virtual machine inside FUSION?
did you check the VMDK ipath if it is there or not .
if you have vmdk you can create virtual machine with existing vmdk.
check this link