Can't update from 4.1.18 to 4.1.20
I'm currently running 4.1.18 and the dashboard shows an available update to 4.1.20.
When I click update, Hoobs shuts down and shows 4.1.18 with an available update to 4.1.20 after the restart. Therefore the update didn't went through. 

I tried it multiple times via the browser and via the Mac app.