Hi Karl:
Thought I had posted a reply, but it didn't go through.
When I set the stringer to be 4" thick it became irregular in shape at the landing, but only on the inside corner of an L shaped stair. I sent the file to Fabrizio and he told me I had found a bug. Apparently, 2.0 was a major rewrite and this bug only occurs under specific conditions and he is working on a fix.
I admit to not being really great at cad, but to me the interface of Archistair 2.0 is not that easy. A large part of this is due to the fact that building a 3d stair with its many variables is a very complex thing. I did the rough tread layouts in Stairmaker and the rest in 2d for the moment. Fabrizio asked that I send him a sketch of the stair that I wanted and he would try to make it in Archistair. I have to say that Fabrizio has been very fast and detailed in his responses to my questions.
Part of my dilemma is that as a sole practitioner, I really don't have the time (or inclination) to juggle a number of different add-on programs that have protection keys and different interfaces. This is not meant as a direct criticism of Fabrizio, as they make great products, but rather a comment on ArchiCad in general.
Thanks,
Don Lee