Uninstalling cups might not have been a good idea... There seems to be something wrong in gslapt that wants to uninstall a lot of things for some programs...
You can check what is being uninstalled before you click on ok, though.
It's usually safer to type "removepkg cups", if you really want to uninstall it, and only that package is removed and you can see what's going on.
But why did you uninstall cups? Did you go to vasmcc and open the webpage for cups configuration? Did it not work?