Seems like the questbot can't use singular like it should. I am running my deathknight and it's only using one spell! Tried both unholy and frost but it's just tagging the mob and then just autohitting it, which results in a death if it happens to pull more then one at a time. Singular seems to work fine when using grind bot so it must be something with Quest-botbase. Please take a look in this!
"In Advanced view you will see the below toolbar. Click the paper click icon (highlighted)." There is nothing highlighted. And also no paper icon. View attachment 752 2014-10-27 11.03.txt