FULL PRODUCT VERSION :
java version " 1.7.0_17 "
Java(TM) SE Runtime Environment (build 1.7.0_17-b02)
Java HotSpot(TM) 64-Bit Server VM (build 23.7-b01, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
OS X 10.8.3

A DESCRIPTION OF THE PROBLEM :
When attempting to exit our application, on Mac OS X 10.8, running from a JNLP file, the error listed below is produced. The application then hangs and has to be closed with Force Quit. This is only a problem when the application is run with Java Web Start; when the jar file is run from the command line, the application closes normally. The error is specific to Mac and is not produced on Windows or Linux.

20130506_162817: Exception " java.lang.IllegalStateException: zip file closed " occurred in thread ID 65(Thread-25)
java.util.zip.ZipFile.ensureOpen(ZipFile.java:632)
java.util.zip.ZipFile.getEntry(ZipFile.java:303)
java.util.jar.JarFile.getEntry(JarFile.java:226)
com.sun.deploy.cache.CachedJarFile.getEntry(Unknown Source)
java.util.jar.JarFile.getJarEntry(JarFile.java:209)
com.sun.deploy.security.DeployURLClassPath$JarLoader.getResource(Unknown Source)
com.sun.deploy.security.DeployURLClassPath.getResource(Unknown Source)
java.net.URLClassLoader$1.run(URLClassLoader.java:358)
java.net.URLClassLoader$1.run(URLClassLoader.java:355)
java.security.AccessController.doPrivileged(Native Method)
java.net.URLClassLoader.findClass(URLClassLoader.java:354)
com.sun.jnlp.JNLPClassLoader.findClass(Unknown Source)
java.lang.ClassLoader.loadClass(ClassLoader.java:423)
java.lang.ClassLoader.loadClass(ClassLoader.java:410)
java.lang.ClassLoader.loadClass(ClassLoader.java:356)
jogamp.opengl.egl.EGLDrawableFactory.destroy(EGLDrawableFactory.java:242)
javax.media.opengl.GLDrawableFactory.shutdownImpl(GLDrawableFactory.java:214)
javax.media.opengl.GLDrawableFactory.access$100(GLDrawableFactory.java:96)
javax.media.opengl.GLDrawableFactory$1.run(GLDrawableFactory.java:233)
java.lang.Thread.run(Thread.java:722)

REGRESSION. Last worked in version 6u45

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run application BioLayout Express3D from http://www.biolayout.org by clicking the button " Launch BioLayout Express3D " in the sidebar of the web page. This launches the program using Java Web Start. Quit the program using command-Q. The Exception listed above is generated.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The program should shut down normally.
ACTUAL -
The program hangs and has to be closed using Force Quit

ERROR MESSAGES/STACK TRACES THAT OCCUR :
20130506_162817: Exception " java.lang.IllegalStateException: zip file closed " occurred in thread ID 65(Thread-25)
java.util.zip.ZipFile.ensureOpen(ZipFile.java:632)
java.util.zip.ZipFile.getEntry(ZipFile.java:303)
java.util.jar.JarFile.getEntry(JarFile.java:226)
com.sun.deploy.cache.CachedJarFile.getEntry(Unknown Source)
java.util.jar.JarFile.getJarEntry(JarFile.java:209)
com.sun.deploy.security.DeployURLClassPath$JarLoader.getResource(Unknown Source)
com.sun.deploy.security.DeployURLClassPath.getResource(Unknown Source)
java.net.URLClassLoader$1.run(URLClassLoader.java:358)
java.net.URLClassLoader$1.run(URLClassLoader.java:355)
java.security.AccessController.doPrivileged(Native Method)
java.net.URLClassLoader.findClass(URLClassLoader.java:354)
com.sun.jnlp.JNLPClassLoader.findClass(Unknown Source)
java.lang.ClassLoader.loadClass(ClassLoader.java:423)
java.lang.ClassLoader.loadClass(ClassLoader.java:410)
java.lang.ClassLoader.loadClass(ClassLoader.java:356)
jogamp.opengl.egl.EGLDrawableFactory.destroy(EGLDrawableFactory.java:242)
javax.media.opengl.GLDrawableFactory.shutdownImpl(GLDrawableFactory.java:214)
javax.media.opengl.GLDrawableFactory.access$100(GLDrawableFactory.java:96)
javax.media.opengl.GLDrawableFactory$1.run(GLDrawableFactory.java:233)
java.lang.Thread.run(Thread.java:722)

REPRODUCIBILITY :
This bug can be reproduced always.