kliment/Printrun — pull request #260 by GeorgeHahn (2012-07-14 21:53:21+00:00)
Title: Fixed crash when distance is negative (crash occurs on line 166)

I don't think this is the correct fix - distance should never be negative. However, this does get around the crash that occurs when this file is loaded:
http://uppit.com/deak3bcz8m0j/ExampleCrash.gcode