Unable to Paint on 3D View Texture Paint

I’m following a tutorial on making an island and currently trying to texture paint the ocean. When I try to paint in the 3D View Texture Paint I cannot, but it allows me to paint in the UV map. I could use the UV map, but it is hard to get the fine details around the island because (obviously) the island does not show on the UV map. :frowning:

I’ll try rewatching the video to see if I ended up doing some small thing differently, but comments are still welcome. :yes:

EDIT: I’m using Blender v2.71

I figured it out. When making the UV image, instead of the default “Blank” Generated Type it had to be “UV Grid”.