Trial of Dorico v1.1

Please can someone tell me why I am getting notes without noteheads, time signatures as arrows?
is there a missing font?
Many thanks,

Have you tried restarting your computer after the installation?
That resolved the problem for others, see also this topic.

Definitely looks like a font issue. Restart your machine, and see if that helps

Many thanks, Stefani and Anders, a shutdown and restart appears to have fixed this issue.
Have a good day,