[kicad-users] the Autorouter doesn't works in internals layers ?

[cf...@rocketmail.com]

Program:Pcbnew
version: Stable-svn1543

I have an PCB with 4 layer so, I try to use the autorouter.
For the layer cu and components it's ok but not in internals layers ?!

is this normal?
thanks

Cfdev