Why don't my special plotscripts work?
In the Special Plotscripts submenu of the Edit General Game Data menu, you can set a plotscript to be run automatically when you die, which is called the Game-Over plotscript, and you can set a plotscript to be run when you load a saved game, called the Load-Game plotscript. Game authors often complain that these two special plotscripts do not seem to work at all.
If you encounter problems with your Game-Over script or your Load-Game script, make sure that the Don't save gameover/loadgame script IDs option in General Game Data -> Preference Bitsets is ON. This is the default in new games but wasn't in old ones. If it is set to off, then the special plotscripts are stored in saved games, so changes made in CUSTOM do not take effect unless you play from the beginning! In other words, if you used an old saved-game from before you assigned load/gameover plotscripts, they won't work.
Game-Over script require a gameover command at the end of them to fade back to the title screen, otherwise the player will resume control. Of course, this command isn't necessary, and a popular use of the game over script is to handle undefeatable bosses.