Got me stumped..
Where did you find 'LWcfg.xml"? Did you find the 'LWcfg.spb' file?
..Did a little searching...
Did you recently install Acceleration?. (I do not have Acceleration, only SP2. I do not have the 'LWcfg.xml' file anywhere on my system.) Also, do you have the SDK installed.
It seems that at least one other simmer, Grizzard, got the same error after installing Acceleration.
http://www.simviation.com/cgi-bin/yabb2/YaBB.pl?num=1209603114/2#2Maybe keep an eye on that thread to see if Griz' gets it solved. You could also post your problem in FSX, as it is really an FSX issue, not an AI issue so you might get more response there.
Dave
At that time [1909] the chief engineer was almost always the chief test pilot as well. That had the fortunate result of eliminating poor engineering early in aviation.