Problem updating to 5.0.42

Hi folk,
I have .41 installed. I tried updating via the update button in the component but got:
https://www.screencast.com/t/X3QZ7AKxw

So i downloaded the launcher and attempted install:
https://www.screencast.com/t/xRTxW5urC

But get various error messages such as:
https://www.screencast.com/t/vbvrjifG
or
https://www.screencast.com/t/Dbl2LMgtG


Now what to do?

cheers, Robin

PS the new 'Parents Views Diary' (category layout) is being very successful.