Is this old news? Maybe I'm the only one not aware of this, but there's a version 1.0.3 available on http://www.armadillorun.com/
See http://www.armadillorun.com/versions/ for feature list. Or read here:
* Added support for multiple user profiles (allowing multiple users to play the game without interfering with each other).
* Added 'reset level score' button.
* Made auto-save feature optional.
* Added support for multiple levels of undo/redo.
* Added function to rotate selected nodes.
* Added copy and paste editing functionality.
* Added optional display of cost of selected items (can be helpful in setting the budget when creating levels).
* Added optional stopwatch timer, showing how long each solution takes.
* Changed view icon to show current state rather than next.
* Fixed bug that allowed links to be placed outside boundaries.
* Fixed Windows Vista registration problem.