Empty Array Error

[bleckley]

Hello,
I am attempting to initialize a font, and while running, I get the following:
Ignoring empty character rendering: Cursor, D
Exception in thread "main" java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.simontuffs.onejar.Boot.run(Boot.java:340)
at com.simontuffs.onejar.Boot.main(Boot.java:166)
Caused by: java.lang.ArrayIndexOutOfBoundsException: 0
at sun.font.CompositeStrike.getStrikeForSlot(CompositeStrike.java:79)
at sun.font.CompositeStrike.getFontMetrics(CompositeStrike.java:97)
at sun.font.FontDesignMetrics.initMatrixAndMetrics(FontDesignMetrics.java:359)
at sun.font.FontDesignMetrics.(FontDesignMetrics.java:350)
at sun.font.FontDesignMetrics.getMetrics(FontDesignMetrics.java:302)
at sun.java2d.SunGraphics2D.getFontMetrics(SunGraphics2D.java:863)
at edu.berkeley.cs.nlp.ocular.image.FontRenderer.renderString(FontRenderer.java:377)
at edu.berkeley.cs.nlp.ocular.image.FontRenderer.getRenderedFont(FontRenderer.java:354)
at edu.berkeley.cs.nlp.ocular.main.InitializeFont.run(InitializeFont.java:75)
at edu.berkeley.cs.nlp.ocular.main.OcularRunnable.doMain(OcularRunnable.java:25)
at edu.berkeley.cs.nlp.ocular.main.InitializeFont.main(InitializeFont.java:61)
... 6 more

What array is empty, and how can I overcome this, please? My text sample has letters, numbers, and punctuation, so I'm not sure what is missing.

Thank you,
David