No problems compiling but can't install

[TF]

I'm having trouble with scons install. I built with scons and then did

scons install prefix=/usr/local minimal=0

Everything completed without any errors but I ended up missing files. I was missing:
/data/shaders/simple/vertex.glsl
/data/skins/simple/textures/loading*.png

I'm a scons newbie but it looks like some files may be missing from the scons config?

I'm trying again now without the prefix= bit.

I'm running on Ubuntu 7.10