Abacus 2.1.0 is available for download. (2.0.0 never made it into the public arena.)
I've been tinkering with it for so long that I can't remember all the new things since 1.0.0 but it's got a much whizzier interface and things like selecting print size and transposition. Oh yes, it doesn't fall over under Windows XP any more (probably).
It is shareware with a registration fee of £10/$16 but you can play with it for quite a while before you register it.
It is available from http://www.abacusmusic.co.uk/
Constructive comments, useful suggestions and even intelligent criticism are welcome. Abuse and carping will be ignored. My response to "It doesn't do..." will probably be "No, not yet."
Bryan Creer