Hello, I am trying to learn the Directx common file framework to get a better understanding of Directx, also i have heard they are a good way to put demos together. I am having some trouble though. I started with a demo from a book, "begening Direct3d game programming", and when i try and compile the demos i get the error, Xfiles fatal error LNK1104: cannot open file ''Debug\d3dapp.obj'' So i tried to make my own project, that just created a simple window from the common file framework and get the same error. I copied all the common files i am using into the directory of the project, and made sure they are included in the projects file list, and i get the same error. I also searched my entire HDD for d3dapp.obj and found nothing. So there must be something i am missing. Anyone have an idea? Thanks in advance