macOS Have I found a bug in Apple's JRE?

[wrldwzrd89]

For some odd reason, trying to load any of the images in the attached zip file using this code:

final URL url = GraphicsManager.class.getResource("/net/worldwizard/fantastle/resources/graphics/objects/" + normalName + ".png");
final BufferedImage image = ImageIO.read(url);

Where normalName is the name of the image file (without the extension), causes an EOFException, on the second line. Other images work just fine, and resaving the offending images doesn't seem to help.

I'm using the latest Java 5 on Mac OS X 10.5.6.

 

[wrldwzrd89]

Update: I was able to work around the problem by stripping the PNG images of their metadata.