Just received this in my inbox:

"Smith Micro has asked us to inform you that they have uploaded a new file for Miki 4.0 - P9 & Pro 2012 Owners. If you would like to download this update, log in to your account at http://www.contentparadise.com. Simply visit your Order History, find your original order for that product then revisit the confirmation page in order to download the new file.
If your download link has expired, please contact customer service to request a temporary extension so that you can access the new file. Sincerely, Content Paradise Customer Service."

Maybe this has been mentioned before and I don't know what the fixes are, so I downloaded it but be warned, this is a pretty hefty download at 280 megs (Windows version). Maybe Steve Cooper or somebody else from the Smith Micro/Poser team can tell us what fixes or tweaks are in this new Miki 4.0 SR2 version.