It seems that I cannot find the proper way to get DVDLogic's IGEditor to link buttons to a Playlist's Playmarks. I've tried a lot of commands, including PlayPLatMK, but I keep on getting the message that it's "not used for interactive activity." Now I'm at a loss. I don't know what to do. Just HOW do you link a Main Menu button on IG Menu to the intended Chapter on a Playlist?