I checked out your software - very good impression. BigJay’s comments are great and cover all the direct script-writing tasks. I am additionally concerned in using the software for the earlier structuring phases, so these comments have to do with this.
Main thing for me was the very non-intuitive way of editing scenes - after creating one with F1, I couldn’t edit it by just clicking and typing…
Having to switch to the scenes map is not ideal, imo. Maybe utilizing the right-mouse clicks if you feel it has to be protected?
Also, once I have a text, there doesn’t seem to be a way of changing its assignment - i.e. changing action to dialogue. No biggie, but might be something for a pull-down option.
While I like the idea of the scene map, I would prefer to see it dockable. Particularly early on, there’s lots of re-arranging and structure play, and I feel the scene map is my navigator - I’d like to park it to the side and be able to jump about more easily. As an alternative, I suggest there be a key shortcut to switch to the scene map panel.
I also manage to freeze the program reliably - thinking the scene map is my navigator, I tried dragging the scenes about - scene a down under scene c, for example. This seemed to be intended, as the scene dragged, but upon mouse release the whole program froze and had to be re-booted…
Being able to drag whole segments is - I feel - very important for earlier phases of the process. I’d also welcome a collapsable hierarchy. At least additional ‘act’ headings, maybe another.
Act 1
…scene 1
…scene 2
Act 2
…scene 3
hmmm…
Spelling correction - would be a nice addition. Actually caught this reading your “he suddently” in the English sample 
Great stuff! After testing the drag and crash thing a few times I’ll need a new demo!
edit - d’oH!
drag and drop just worked. ???
May have been something else…