I feel I have to make the obvious observation, in the interests of transparency, that this application seems to borrow some of its ideas from Scrivener, particularly the non-linear writing idea. Even the advertising line "Probably the biggest advance in screenplay writing since the advent of the typewriter" is similar to Michael Marshal Smith's comment about Scrivener: "The biggest software advance for writers since the word processor.” I make this observation merely as a user of Scrivener (who has no affiliation with the company that makes it), knowing that a lot of work has gone into making it a very fine tool. I'd recommend giving it a try. To judge from the testimonials on their site, there are professional screenwriters who find it an excellent piece of software. Their forums are also remarkably useful.

The poster is not making some sort of joke. See this report about the developer's untimely death, and also his son's statement of his commitment to the application:

http://blog.eogn.com/eastmans_online_genealogy/2008/11/keith-wilson-ri.html

On the advice of the developer I have rebuilt the database file. This seems to have solved the problem. My thanks to him for the rapid response.

When synchronising, Cyberduck deleted files on my local drive that were newer than the files on the remote, then crashed. It has taken a day to sort things out, and some of the files are still missing. Beware.