I have the same problem. It's been working fine for a few months and then today it ask me something about making a magnet default and now when I click on LW it begins to load page comes up for about 5 seconds and then immediately disappears by it's self.

I have been through all the forums and uninstalled/reinstalled, removed preference file, update java, ran the port test... which came out working.

I'm using the LW pro on windows me.... any help would be appreciated... thanks