JM,
I too was having some sporadic issues with my AHP following upgrading to the latest version. Today, thanks to these posts, the problem was identified. I have many old light modules and wall outlets. It seems that the new version 3.318, modifies these modules in AH.
I'd suggest you open your AHP and right click on your devices - edit, and see that they are properly defined. The old modules need to be listed as Older (No SoftStart). See if that fixes your issue.
Besides sporadic operation of some lights, I also had noticed that any of the older devices (non appliance modules) would not turn on when manually set to on via AHP. That is all now resolved since editing the module definition.
THANKS again to those who have been posting very good information so we're able to easily recognize the error of our ways.
paddy