When creating a curve, it's possible that the "textured side" may be facing away from you, or on the wrong side of the curve. To fix this, use Ctrl-I. This will "invert" the mesh, and will put the viewable texture on the other side of the curve.
Yes thats right. I mapped for about 4 months before finding those filters (I was too scared to look around stuff thinking I might change something)
I wasn't able to see any of my clips, and me like a dummy made my first map over again by copying a large group of brushes and functions and pasting them into another map because I had put clips where I didn't want them.