First of I want to compliment the developers for making this feature-rich, easy-to-use, conform-standards editor. Is it really free?
What I can't figure out (or it is a bug) is how to restore my scenes. I can select open from the menu and I see thumbnails of all my scenes. When I click them I will get an empty scene however. But when I add an object and go back to the thumbnails, the thumbnail is updated. What is going wrong?
Secondly it seems as if undo-redo-delete don't work from the keyboard shortcuts (ctrl-z, ctlr-y, delete/backspace).