new Functions blank Page after CI-Update

Hah, that's pretty much the method I use to quickly figure things out, it's dirty but gets quick results if you don't have to worry about defacing the site while you debug, but hey, the quicker you solve the problem, the better, right?

I use slightly modified version of this method.

First I put the line roughly in the middle of the code, if message appears, the issue is bottom part, if message doesn't appear, it's with the top part of source code. Then I repeat it, using original middle point to split either top or bottom part between two points.

I believe it had something to do with "binary search" logic, but not entirely sure how I came across to use it to pinpoint coding issues.