1.8.8 + deleted all integration can be recovered later or something.

src/main/java/appeng/server/ServerHelper.java

@@ -83,7 +83,7 @@ public class ServerHelper extends CommonHelper
 
 			if( server != null )
 			{
-				return server.getConfigurationManager().playerEntityList;
+				return (List)server.getConfigurationManager().playerEntityList;
 			}
 		}