I updated to VEP 7.2.1481 to check VST3 compatibility, and VEP server scans plugins and starts fine (took forever to scan VST3).
However, when loading a VEP plugin in Nuendo the first time, it did not see the server - no instances appeared in the plugin connect display. I had to restart the server for Nuendo to see it.
Could it be that the VST3 scan process took too long and either the local network connection timed out or the broadcast never initialized? I left the initial VST3 scan running and came back later to acknowledge a couple of blacklisted plugins, so it did sit between scan and final load for a while.
Just an fyi.