Indeed portions missing and not completely compatible with SM 2.7 Rated 3 out of 5 stars
I was using Seazilla 2.4, and just tried Classic Default as a test. Lightning buttons are missing for creating/editing events, Composer print button is skewed (Seazilla has its own problem with the Composer toolbar), to name a couple issues. Still, the artwork is excellent, and the feel is there. Unfortunately, I am unable (as of 2012-03-20) to reach the author's homepage.