#3 RuntimeException: Cannot move a sloped egde inwards

[tg]

when i run ditaa with the attached file i get the following error.
it only happens when this diagram begins on line 30

$ java -jar /opt/ditaa/ditaa.jar

ditaa version 0.9, Copyright (C) 2004--2009 Efstathios (Stathis) Sideris

Running with options:
Reading file: ditaa-bug.txt
Exception in thread "main" java.lang.RuntimeException: Cannot move a sloped egde inwards: (287.0, 511.0) -> (325.0, 513.0)
at org.stathissideris.ascii2image.graphics.ShapeEdge.moveInwardsBy(Unknown Source)
at org.stathissideris.ascii2image.graphics.Diagram.separateCommonEdges(Unknown Source)
at org.stathissideris.ascii2image.graphics.Diagram.<init>(Unknown Source)
at org.stathissideris.ascii2image.core.CommandLineConverter.main(Unknown Source)

[tg]

ditaa bug