All my newly updated iWork apps (Pages, Numbers, Keynote), all crash during the welcome screen. Since yesterday, I have yet to actually launch the applications, before they blow up (not literally, of course). I had to "downgrade" to the previous version, which all work fine. Is anyone else getting this, and is there anything I can do? I have used Disk Utility, it found some errors and rectified these accordingly. Everything ought to be tip top, however, something has gone completely awry with the entire iWork suite since upgrading from OS X 10.8.5 to 10.9. Any thoughts on what steps I might take to mitigate this discombobulatingly insane crash reflex?