Odd ConcurrentModificationException

[pbradshawusc]

In running my restaurant for some test scenarios with thread-safe structures, I ran into this exception and I can't figure out what caused it.

Reading through the stack trace, it seems to be an error with the imageio class, as it occurs when I am creating a gui for my order and reading in the proper image file. Is this something that I should worry about or should I ignore it for now as it is not a concurrent modification of my agent's data but rather in a background class?

CustomerAgent@74f50af4: Unexpected exception caught in Agent thread:
java.util.ConcurrentModificationException
    at java.util.Vector$Itr.checkForComodification(Unknown Source)
    at java.util.Vector$Itr.next(Unknown Source)
    at sun.java2d.cmm.ProfileDeferralMgr.activateProfiles(Unknown Source)
    at java.awt.color.ICC_Profile.getInstance(Unknown Source)
    at com.sun.imageio.plugins.jpeg.JPEGImageReader.setImageData(Unknown Source)
    at com.sun.imageio.plugins.jpeg.JPEGImageReader.readImageHeader(Native Method)
    at     com.sun.imageio.plugins.jpeg.JPEGImageReader.readNativeHeader(Unknown Source)
    at     com.sun.imageio.plugins.jpeg.JPEGImageReader.checkTablesOnly(Unknown Source)
    at com.sun.imageio.plugins.jpeg.JPEGImageReader.gotoImage(Unknown Source)
    at com.sun.imageio.plugins.jpeg.JPEGImageReader.readHeader(Unknown Source)
    at com.sun.imageio.plugins.jpeg.JPEGImageReader.readInternal(Unknown Source)
    at com.sun.imageio.plugins.jpeg.JPEGImageReader.read(Unknown Source)
    at javax.imageio.ImageIO.read(Unknown Source)
    at javax.imageio.ImageIO.read(Unknown Source)
    at restaurantGUI.OrderGUI.<init>(OrderGUI.java:62)
    at restaurant.Order.<init>(Order.java:11)
    at restaurant.CustomerAgent.LookAtMenu(CustomerAgent.java:251)
    at restaurant.CustomerAgent.pickAndExecuteAnAction(CustomerAgent.java:153)
    at agent.Agent$AgentThread.run(Agent.java:140)