First I would try rebooting your computer and if that doesn't work; uninstall Lectora and re-install it. Sometimes that is the only thing that helps. Sounds like something got messed up when it crashed and needs to be reset.
JohnK said:I had just edited a course with a quiz, was testing it for accuracy and proper results submissions, and when I finished the quiz, instead of it emailing results, it briefly went on to the next quiz (an entirely different quiz, mind you), then froze, then crashed. Now my Lectora will not open any Lectora file with the exception of published titles. Any ideas?