Can you zip the project and email it to me using my profile email? (Please don't post it).
Also please submit a Unity bug, and include the project, explaining that the API Updater fails to update the PlayMaker dll. I know the Unity team tests PlayMaker during Unity beta cycles to make sure the updater works, so there must be something particular to your setup that breaks it.
Worst case I can provide you with updated dlls, but I would also like to figure out what's happening in your case. We've had a few reports, but installing the latest Playmaker and running the API Updater has always fixed it.
EDIT: Did you try turning your anti-virus off while importing? It could be preventing the API Updater from modifying the dll.