Get it here.
This is the fourth beta of MacJournal 5.0.3. There are fixes in lots of places, including a few crashers. Printing information should be saved better, downloading entries from blogs should work in more circumstances, image resizing should work better, and the Change Tags sheet should behave more logically when dealing with multiple entries. The entries list should go away after a search more reliably. Fixed some display issues with the sidebar as well.
Check out the included Version History for the full details.