SMD-ADS is not compatible with 1.1.8!
Many people are waisting their time trying to fix bugs like the double ads appearing. There seems to be no support here or at simplemachines.org.
Fair enough it doesn't work with 1.1.8, but I don't see a reason for it to be listed as working with 1.1.8. especially since there's no support.
<end rant>