J2SE Version (please include all output from java -version flag):
Java Web Start 10.40.2.40
Using JRE version 1.7.0_40-b40 Java HotSpot(TM) Client VM


Does this problem occur on J2SE 6ux or 7ux? Yes / No (pick one)
Work with Java 7 update 21, fails with update 25 and later


Operating System Configuration Information (be specific):
Happens on all three laptops tested with windows vista and windows 7


Hardware Configuration Information (be specific):
Any


Bug Description:
Exception in thread "AWT-EventQueue-2" java.lang.NullPointerException
at com.sun.jnlp.JNLPClassLoader.getPermissions(Unknown Source)
at java.security.SecureClassLoader.getProtectionDomain(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)


Also report by someone else:
http://stackoverflow.com/questions/17230773/java-7-update-25-makes-our-java-web-start-application-fail-with-no-logging

Steps to Reproduce (be specific):

In a browser, go to: http://uploader.hivelymennonite.org/
Click on "Start the Uploader" (http://uploader.hivelymennonite.org/support/uploader.jnlp)
After the application starts, click the "Import" button.