all works fine here
anyway, to change your text back to normal. delete the script plus > general > scripts > crazy text v1.3 then click remove.
that should change you're test back to normal, failed this you can try deleting the registry data that the script adds.
run > regedit > HKEY_CURRENT_USER\Software\Patchou\Messenger Plus! Live\GlobalSettings\Scripts\CrazyText v1.3