Basicly, it means your program is not installed properly, the files must've been played about with and put in the wrong place, either that or the application is searching the wrong place to download the files, either way, we're probably to blame for that, sorry! We'll try to fix the problem as soon as we can, you can Contact Us about the problem, and we'll do what we can from there.
There's probably a component in the game that isn't compatible with your computer, but it doesn't give you any form of indication. Open up command prompt, drag the .exe file into it and press enter, it should give you an error in that, once you get it, contact us and type the error in the "Message text" part of the form, and we'll take it from there.
Either that of that there's something in the game that we forgot to take out, like a reference that doesn't come with the .NET framework, if so, we might of fixed the problem, so download the game again, and the error whould be fixed. If it still doesn't start up, then contact us about the problem, and we'll look into it.
Well, sorry to disappoint you, but the demo isn't actually that big, the reason it's that big is because of the framework it uses; the .NET framework, if you already have this framework, than you don't need that much space.
It's saying it needs GamerServices (Obviously) and that the .NET framework doesn't have it, luckily, the game itself doesn't need it, so it's taken out in an updated version, just download the game again, and it should be fixed.
It means the site it's searching for to check for updates is down, we apologise for this, if this is happening, contact us and We'll do what we can.
Sorry, they're lost forever, let's be brutally honest, you'd probably waste them anyway!