Please offer only constructive criticism. The intent of the GD Showcase is to help the developer create the best game they possibly can. Show them you support their efforts when posting.
Well, since I downloaded and installed C++ Express Edition (MSVS2005), I decided I'd try it again and I must say its very nicely done!
As for the error, are you using the new _s functions? If so that may be part of the problem, but I'm not sure. Also, are you using any .NET 2.0 only stuff? Since MSVS2005 requires and downloads version 2.0, this might be a good place to look too.
For all VS2005 projects you have to distribute a package of DLL's with your game. Most people do not have these DLL's and so the game will not run. If you plan on distributing it you should build it in release mode and read this: