I have done an installation of the latest version of Auto Actions and immediately it is published I get the error message and a blank white screen that will not display the control panel. Also the extra menu items that would normally appear for community builder, group jive and auto actions disappear. They come back when you go into one of the component items but the control panel does not. If I un-publish auto actions then all is resumed. But of course then I cannot use autoactions.
Hope this helps. I believe that it is something to do with it putting "Auto Actions" on the main administrator menu.
Rgds
Chris.