Blender not rendering water in F12 render? I created some sort a object and can't render the water flowing over it.

Viewport render:



Final render:



It's not render restriction because I've already tried pressing W and removing it.
Hitting Numberpad / Seems to fix the issue, you were in local view. 

I have no idea why that would cause an issue, and would definitly upvote an answer detailing why!