Platform Builder 10.4.3 Patch notes: -Fixed: Moving multiple custom block at once will cause them to become the same kind even if they are different. -Fixed: Slippery function for custom block does not work properly for blocks with a sprite size larger or smaller than 32x32. -Fixed: Export to EXE fails for games with -1 in their course files. -Fixed: There are some problems saving games and variables with EXE packages. -Fixed: Editing a message block's message doesn't give a message at the top. -Fixed: "npc face right" command causes the NPC to face left. -Fixed: In the advanced lighting settings, when subtracting a dark color, some tiles will become very dark.