I have been researching soo long to find an answer to my question but nothing has been able to help me. There is a map that contains both Half-Life 2 Episode 2 and Half-Life 2 Lost Coast Materials and Models. When I open this map in Hammer under "Half-Life 2 Episode 2" all of the Half-Life 2 Lost Coast things become ERROR signs. When I compile the map and run it in Garrys Mod all of the Half-Life 2 Lost Coast things just dissapear. Im trying to build a map for my community and I really dont want to let them down. Can anyone help me?