For those that got this error following the last update, it should be fixed now! Make sure to restart Steam to ensure you get the latest version. Apologies for the inconvenience!
ERROR in action number 1
of Step Event0 for object ob_transition:
struct_get argument 1 incorrect type (undefined) expecting a Number (YYGI32) [
"gml_Script_getTranslatedStr (line 36)",
"gml_Script_anon@7312@___struct___306@___struct___305@battleEndWin@BattleActionsEnd (line 234)",
"gml_Object_ob_transition_Step_0 (line 41)"
]