My problem is similar to the one given as problem 1 here. The responses it got did not resolve the matter.
I have not received a notification in my inbox for either this comment nor this comment on the question: Show that $\Gamma$, $\Lambda$, and the associated sheaf functor are all left exact.
Perhaps it is because of the dialogue the commenter and I have had on the question.
It makes me wonder what else hasn't been shown to me via notifications.
Please help :)