Weird, i have this error for the first time. I've downloaded from MEGA.
Full traceback:
  File "renpy/bootstrap.py", line 277, in bootstrap
    renpy.main.main()
  File "renpy/main.py", line 558, in main
    renpy.game.context().run(node)
  File "renpy/common/00steam.rpy", line 682, in script
    init -1499 python in achievement:
  File "renpy/common/00steam.rpy", line 682, in script
    init -1499 python in achievement:
  File "renpy/ast.py", line 1131, in execute
    renpy.python.py_exec_bytecode(self.code.bytecode, self.hide, store=self.store)
  File "renpy/python.py", line 1061, in py_exec_bytecode
    exec(bytecode, globals, locals)
  File "renpy/common/00steam.rpy", line 857, in <module>
    steam_preinit()
  File "renpy/common/00steam.rpy", line 778, in steam_preinit
    with open(os.path.join(os.path.dirname(sys.executable), "steam_appid.txt"), "w") as f:
IOError: [Errno 2] No such file or directory: u'D:/\.../Price-Of-Power-Ch-17 (1)\\lib\\py2-windows-x86_64\\steam_appid.txt'