[error] App.close

My code has been and is working fine on many VM's. But One is giving me this error "[error] App.close [-1:Timer ()] Timer Runner did not work"

Please help

here is my code.

for n in range(1):
    reg = Region(491,59,1140,935)
if reg.exists(Pattern("1469321512445-1.png").similar(0.50), 0) or reg.exists(Pattern("1470254195609-1.png").similar(0.50), 0) or reg.exists(Pattern("1470143332576-1.png").similar(0.50), 0):
        import os
        cmdPath = os.getenv("comspec")
        title = "Timer Runner"
        cmd = 'start "%s" %s'%(title, cmdPath)
        os.popen(cmd); wait(.5)
        App.focus("castro_ig_pclean - Notepad")
        click(Pattern("1469305690339-1.png").similar(0.90).targetOffset(-70,-9))
        type(Key.ENTER)
        type("v", KeyModifier.CTRL)
        type(Key.ENTER)
        type("s", KeyModifier.CTRL)
        os.system("C:\\castro_ig\\bats\\msaccess_post_private.bat")
        App.close("Timer Runner")
else:
        import os
        cmdPath = os.getenv("comspec")
        title = "Timer Runner"
        cmd = 'start "%s" %s'%(title, cmdPath)
        os.popen(cmd); wait(.5)
        reg2 = Region(1317,146,184,52)
        click(Pattern("1469222076906-2.png").targetOffset(-647,497))
        wait(3)
        reg3 = Region(506,205,1104,759)
        if reg3.exists(Pattern("1477096533761-1.png").exact()):
            wait(3.0)
            click(Pattern("1477096533761-1.png").exact())
            type("0", KeyModifier.CTRL)
            os.system("C:\\castro_ig\\bats\\msaccess_post_like.bat")
            App.close("Timer Runner")
        else:
            App.close("Timer Runner")