If the Virtual Machine Package has been deleted then have a look at How To Undelete Files in Mac OS X [MacRx] and or Google for something like, recover deleted files os x.
Otherwise need analyzable information, so with the external drive attached... To help figure out what is what, the best way to provide comprehensive diagnostic information is to use the "Collect Support Information" command from the VMware Fusion (menu bar)> Help > Collect Support Information and then attach the .tgz file it created on your Desktop to a reply post.
