Well, Macworld is over, 5.0.1 is out, and now the first beta of 5.0.2 is out. 5.0.2 will fix a lot of problems here in there in the 5.0 release and should hopefully get those that were having trouble up and running with MacJournal 5. Here is the download:
This should fix issues with migrating locked journals from MacJournal 4, exporting entire journals to one file, scrolling problems, editing in Full Screen, and several crashes. Check out the included version history to see the full list of changes. The goal is to get this release out by the end of the month. If you've emailed me in the past few days and haven't received a response yet, I'm working through a lot of email right now and will try to get a lot out today. Please let me know if 5.0.2b1 solves your problem.