I'm very sorry for the late response on the earlier post, it got flagged and I forgot to check until now. The VTFCmd is listed in the install instructions but I have also listed the link in the FAQ now
Thank you! After changing my path to that though it didn't change anything, it still crashes when I try and compile. I've been using a simple model just to try and get it working, it shouldn't be an issue with the verts. I should mention that the program itself didn't open at first until you updated it to work on older computers, maybe it's something to do with that?