All known crashes fixed

core/assets/bundles/bundle.properties

@@ -198,6 +198,7 @@ text.builtin=Built-In
 text.map.delete.confirm=Are you sure you want to delete this map? This action cannot be undone!
 text.map.random=[accent]Random Map
 text.map.nospawn=This map does not have any cores for the player to spawn in! Add a [ROYAL]blue[] core to this map in the editor.
+text.map.invalid=Error loading map: corrupted or invalid map file.
 text.editor.brush=Brush
 text.editor.slope=\\
 text.editor.openin=Open In Editor