Fortunately I haven't had any problems with Logos 4 in a long time. The update went without any problems so far as I can see. I like the new highlighting feature very much and it is one I have wanted, but never suggested. That is...
I can now have shortcuts for underlining and highlight. I like to use the red pencil for underlining and now use the shortcut "R" for that. For the yellow highlighting, I use the shortcut "H". First select the desired section to mark, right click and hit the shortcut button. Nice and easy!
Thanks, Logos!
Ergatees