Did you look log in output tab in VS?
Errors ofcorse… what else? 
I am getting this issue when attempting to open my project I made in 4.4 with 4.4. On pressing yes it tells me the Game code cannot be compiled so I press yes again when I am presented with a message saing the game module cannot be found, and to ensure that it exists and is compiled. I then do this properly (I think) in VS and it simply tells me the build failed then comes up with this box again. No idea what to do now
I have no idea what I am doing and so don’t know what I should be looking for in there.
As I said I have no idea what I am doing here and have been searching for a fix for hours now without any progress
It’s C++ project, so you did some coding right? You can read in error that class name is different then header file (.h) that class is declared in (class is AAZombieAI and file is ACreatureAI), both name and file should be the same name (but file don’t need to have U or A prefix)