Hey! I have created a map with Portal 2 puzzle maker, easy thing. Now, I want to put a cake in it, but it's not included in the item list. So, I have the files for the cake, and some idea about how to put the cake in the map, but I can't open my map in Hammer to edit it! The program only open certain file extensions, and I don't know how to export the map into Hammer... help!