Same problem. The traceback says :
While running game code:
File "game/scripts/Mechanics/UI.rpy", line 75, in <module>
File "game/scripts/Mechanics/UI.rpy", line 485, in execute
File "game/scripts/Mechanics/UI.rpy", line 485, in execute
File "game/scripts/Mechanics/UI.rpy", line 487, in execute
File "game/scripts/Mechanics/UI.rpy", line 487, in <module>
TypeError: can only concatenate str (not "bool") to str