illegalArgumentException in GUI

[TonyLo1]

java.lang.IllegalArgumentException: Graph can not be null
at automenta.vivisect.dimensionalize.HyperassociativeMap. (HyperassociativeMap.java:129)
at automenta.vivisect.dimensionalize.HyperassociativeMap. (HyperassociativeMap.java:164)
at automenta.vivisect.dimensionalize.HyperassociativeLayout$1. (HyperassociativeLayout.java:47)
at automenta.vivisect.dimensionalize.HyperassociativeLayout.preUpdate (HyperassociativeLayout.java:47)
at automenta.vivisect.graph.GraphDisplays.preUpdate (GraphDisplays.java:44)
at automenta.vivisect.graph.AbstractGraphVis.updateGraph (AbstractGraphVis.java:137)
at automenta.vivisect.graph.AnimatingGraphVis.draw (AnimatingGraphVis.java:51)
at automenta.vivisect.swing.PCanvas.draw (PCanvas.java:167)
at processing.core.PApplet.handleDraw (PApplet.java:2386)
at processing.core.PGraphicsJava2D.requestDraw (PGraphicsJava2D.java:240)
at processing.core.PApplet.run (PApplet.java:2256)
at java.lang.Thread.run (Thread.java:844)