A few weeks ago I lost my BS icons on desktop (I believe another user allowed the desktop cleanup utility to run).   
I have now tried launching the game:   
d:/program files/Eagle Dynamics/Ka-50/bin/stable/Launcher.exe 
Trouble is, all I get is the grey dialogue box:   
Error:   
cannot open .\BlackShark\BlackShark.lua : No such file or directory     
Now in the folder d:/program files/Eagle Dynamics/Ka-50/BlackShark I can see that file.   
Anybody got any ideas?   
I have seen other threads re the BlackShark.lua file, but these seem to refer to it being corrupted, not "missing" and to ATI cards (I am on Nvidia).   
Only thing I can think of is to uninstall and reinstall - seems a shame to use up my activations however, if there is a better way.   
Much appreciated   
Hartford688