I just received my NanoPc-T4, and downloaded Lubuntu (rk3399-eflasher-YYYYMMDD-XXXX.img.zip).
Without installing any other software, I get an error every time I try to use the Time and Date and Users and Groups from System Tools:

"The configuration could not be loaded"
"An unknown error occurred"

Additional the Software Updates in Preferences gives me the error "Sorry, Ubuntu 16.04 has experienced an Internal Error".

Can anyone shed some light as to these errors?

I re-downladed the eflasher and reinstalled twice with no change.