Before you had this startup error appearing, was LW popping up all the time & refusing to stay closed? Then, did you uninstall LW & that's when the error started popping up? If that's the case, you have a worm

Try the easy fix mentioned at the end of point 2 here, it's worked for a lot of people.
WARNING: Viruses on the network you should be aware of

If that doesn't sound like your problem, try one of the help sites mentioned in point 5. Norbiesworld is free & has helped a lot of LW users.