I have just begun mapping and I made a small room with a light and player start entity. Now whin i hit f9 and click ok it just says hl.exe has generated errors and must be shut down. I guess its something having to do with the configuration but I cant figure it out. Can someone please help me? The directory I am using for hl.exe is the steam cache one, should I be using the sierra directory instead? When I use the hl.exe in the normal half life folder it says its been modified and cant run.