Oracle changed the path of the files.
Previous versions looked like:
$ jar tf UnlimitedJCEPolicyJDK7.zip
UnlimitedJCEPolicy/
UnlimitedJCEPolicy/US_export_policy.jar
UnlimitedJCEPolicy/local_policy.jar
UnlimitedJCEPolicy/README.txt
The new version looks like:
$ jar tf jce_policy-8.zip
UnlimitedJCEPolicyJDK8/
UnlimitedJCEPolicyJDK8/local_policy.jar
UnlimitedJCEPolicyJDK8/README.txt
UnlimitedJCEPolicyJDK8/US_export_policy.jar
A better solution is probably just to trim the directory off completely.