Get it here.
This should hopefully be the last beta of 6.0.7 (famous last words). It fixes a regression in beta 5 with the calendar as well as a few other bugs and performance improvements. There's also a "Rebuild Search Index" item in the Help menu instead of having to use a bunch of modifier keys when launching to do it. Please let me know if you have any issues with this beta via the Help menu's Report a Bug item since this will be released soon. Thanks!