iMovie 10.1.2 won't create new movie project
I've got iMovie 10.1.2 running on El Capitan 10.11.4. It was working just fine and about a week ago it stopped allowing me to create a new movie. I can create a trailer, but not a movie. It doesn't matter if I click on the new movie button on the projects screen, go to file>new movie or use command N - none of them work. I've uninstalled and reinstalled but problem persists. I've also restarted holding the option key to erase preferences. Any other suggestions??? Thanks.
iMovie 10, OS X El Capitan (10.11.4)