`java.awt.HeadlessException` on startup

I installed sikuli using apt-get and when I tried to run it:

$ sikuli-ide
Exception in thread "main" java.awt.HeadlessException
 at java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:173)
 at java.awt.Window.<init>(Window.java:477)
 at java.awt.Frame.<init>(Frame.java:419)
 at javax.swing.JFrame.<init>(JFrame.java:218)
 at org.sikuli.ide.SikuliIDE.<init>(SikuliIDE.java:662)
 at org.sikuli.ide.SikuliIDE.getInstance(SikuliIDE.java:138)
 at org.sikuli.ide.SikuliIDE.main(SikuliIDE.java:975)

More info:

$ lsb_release -rd
Description: Ubuntu 12.04.1 LTS
Release: 12.04

$ apt-cache policy sikuli-ide
sikuli-ide:
  Installed: 1.0~x~rc3.tesseract3-dfsg1-1
  Candidate: 1.0~x~rc3.tesseract3-dfsg1-1
  Version table:
 *** 1.0~x~rc3.tesseract3-dfsg1-1 0
        500 http://us.archive.ubuntu.com/ubuntu/ precise/universe amd64 Packages
        100 /var/lib/dpkg/status

Let me know if there's anything else I can do to help narrow this down.