Because that is included with Windows, not with Launchbox.
As for the rest of your post i cant really speak to that, apart from saying as the program is updated and improved things will change and plugin creators will need to update there plugins to stay inline. I have seen this with other programs as well that updates break plugins, theres not really a lot that can be done there without just freezing the program and not updating it when new features are available. That is just the nature of a plugin feature as the program updates/evolves, plugins will need to adapt to the changes.