There are no shadows on the lighter part of the apron. Here is a screenshot to show you what I mean.
![Image](http://oi64.tinypic.com/2m2t4zt.jpg)
As you can see, shadows appear on the darker surface, as well as the yellow taxi lines, but not on the lighter one. I am using P3Dv3 (have not installed 3.1 yet). I also have installed FTX Global, Vector and OpenLC Europe. Here is what my scenery library looks like, in case it's of any help.
![Image](http://oi63.tinypic.com/16916dc.jpg)
Thanks in advance for your help.