Fail to compile T3D 1.1Beta2 debug version in VS2005

I open the project "Torque 3D 2009 Pro 1.1 Beta 2\Examples\FPS Example\buildFiles\VisualStudio 2005\FPS Example.sln" and compile it. Every thing seems ok.
But when I try to run the App. Pop up the error window "Unable to load game library: ...\FPS Example_debug.dll"
I am sure the file in the right DIR...
Could anyone tell me how to resolve it. Thanks a lot!!!!