I'm currently trying to build a standard PM layout book and after between 10 and 20 "Imports", "Updates", or "Drawing Settings" clicks, PM quits offering any of these functions on the right-click menus. These functions don't work from the pull-down menus either. I have to restart PM to get the functions back. Annoying!! So far, I have restarted PM 8 times in a 6 hour period.