Hi
I have exactly the same security alert from Kaspersky for 1.6.3.
1.6.2 installs ok but 1.6.3 is deleted by Kaspersky!
By the way I am running Win 10 upgraded from win 8.1 but am still getting the freaky fonts problem!
I know that others are not having this problem but I certainly am.
Would it help if I supplied my log files?
Thank you for working on solving the Win 10 problems, much appreciated!