LinkTailPGC links to the post-command section of the current PGC. Of course, DLP can set this command => right-click on the button hotspot -> Link -> VM Command. A VM Script window opens, type over Nop with LinkTailPGC. Notice that the DVD VM Commands on the right of dialog window automatically scrolls to the possible commands as you type.

Are you saying there's no button highlight shown when a button is selected in standalones? Can you navigate around the menu button selection? So you replaced the DLP main menu with the original DVD main menu? I thought it's the other way around.