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.