Stop AutoKey script if Window is not match and print the ShortCut literal

Question

i use a AutoKey (autokey-gtk 0.95.10) script with the shortcut ü

it get errors with:

winTitle = window.get_active_title()
winClass = window.get_active_class()
if winTitle != "0 A.D." or winClass != 'pyrogenesis.pyrogenesis':   
    keyboard.send_keys("ü")

but not with shorter Version:

winTitle = window.get_active_title()
if winTitle != "0 A.D.":   
    keyboard.send_keys("ü")

got Errors and the CPU is really high at 7%:

If i run this AutoKey (autokey-gtk 0.95.10) script again it show no errors but does nothing. CPU still high and i need to shutdown it (no normal exit).

i don't understand why this happens. BTW as workaround its good enough for me to check only the window name. The better solution should check for class and window name.