I have a problem with iMovie on iPad.
I didn't have enough space to export a project to the camera roll. And the iMovie export to camera roll functionality wasn't available.
For this reason I've made some space, and iMovie export correctly started, but just before to finish, I got the error message: "not enough space to export it" (although I've freed the necessary space).
But what it is worse is that now iMovie is using the space I've previously freed, and the app memory usage is getting bigger and bigger. And still the movie is not exported outside the app, I believe a new copy is cached in the app bundle after each (failed) export.
What can I do?