I've sussed it out, for some weird reason I ran the program once and it compiled, I ran it again and then it said all the includes were missing. I went back and tried the previously saved project which did the same. I uninstalled and reinstalled and it still wouldn't work. So after much swearing I went back and started a new project and copied all the files over, hey presto everything works again, no idea why as I never changed any include folders at any point. Hope this saves anyone else 2 days of messing about. Thanks for all the comments guys.