Actually I found that the K5_earth.cfg file needed to be updated to work properly in newest ver. of Orbiter.
There is an updated one availible at avsim I think it's name is LC39 2005 update, done by Spaceguy5.
However it wouldnt be difficult to edit it yourself, as I did the one for Kev's VAB Crawlers. Just have to look at both it,
and the default earth.cfg, and you'll see what to change.