this always plays out the same way

1: i will have finished the blaze and sevros relationship paths

2: blaze will ask if i've been avoiding him

3: no matter what i do from this point on, any input i make will result in me being taken to sevros' room (hoard background) and michelle accosting the mc

4: after alek makes his appearance, he will say a few lines of dialogue before the game just dies. on both web and desktop versions, renpy will crap itself. the specific error message is (alternatung between 40 and 39)

  File "game/script/game_loop.rpy", line 40, in script call

    call inside_the_room

  File "game/script/game_loop.rpy", line 39, in script call

    call screen rooms_menu_travel

and the snag seems to catch itself at 

File "game/script/Scenes/kin/alek.rpy", line 154, in script

    hide Michelle with disolve

  File "renpy/ast.py", line 1654, in execute

    paired = renpy.python.py_eval(self.paired)

  File "renpy/python.py", line 1092, in py_eval

    return py_eval_bytecode(code, globals, locals)

  File "renpy/python.py", line 1085, in py_eval_bytecode

    return eval(bytecode, globals, locals)

  File "game/script/Scenes/kin/alek.rpy", line 154, in <module>

    hide Michelle with disolve

NameError: name 'disolve' is not defined

any help in un-fubar-ing my save would be greatly appreciated.