I have a DefaultAtmosphere.atm and Default.cfg (4KB), and a bunch of default material settings, but no startup scene.  I think that is something you can do on the Options, General Preferences screen.

I did a complete un-install and removed all of the folders left behind in the Progam  Files directory.  I did not clean out the registry - don't want to touch that unless e-on says to.  When I re-installed, it still had my serial number and activation stuff remembered, so there may still be a few hidden files that did not get refreshed.  

Will go back to play and learn mode - wait for the next patch and keep my fingers crossed. 

LVS - Where Learning is Fun!  
http://www.lvsonline.com/index.html