It seems that after executing a remote reboot on a group of computers the processes (remote.vncscan and cmd.exe) remain open. I am using a process killer to get rid of these after each execution but thought it may be possible for vncscan to do this itself. Running version 10.1.8. Apart from this minor point an amazing piece of software that is making my job easier by the day.
Just discovered that the processes are for the thumbnail screens, not the reboot but they do not termnate when venm exits.