Repeatable crash error:
1. start inkscape
2. select rectangle tool
3. draw a rectangle (F4)
rectangle is drawn with controls points, unselected
4. select edit-path-nodes tool (F2)
rectangle remains unselected. if you see black arrows
round the shape then you did it wrong.
5. press delete button on keyboard [<-]
6. bye, bye...
Inkscape attempts to save the work file, but then hangs. Have to
control-C to kill it from the command line, since I'm not running
it as an .app