After updating my Synology NAS DS 720+ to DSM 7.0-41890 VirtualHere Version 3.2.9 on DS720+ does not work.
I need an update for VirtualHere package for synology DSM 7.0
You need to wait until synology adds it to their DSM 7 app store..hopefully soon
Actually in the meantime you can just use the Beta version of virtualhere for DSM 7. In the DSM Package Manager click Settings ->Enable beta then install virtualhere beta from here