Issue was found on linux platform (ubuntu 14 32 bit)
To reproduce, install jdk9 b63 client PIT bundle from http://jre.us.oracle.com/java/re/jdk/9/jdk9-client/b61_2015-04-21-0301_2557/, and run command
javaws http://sqeweb.us.oracle.com/net/sqenfs-1/export1/comp/jsn/users/larry/bugreport/batJavaws/jnlp/testBAT.jnlp
If trace shows below error the issue is reproduced:
 #### Java Web Start Error:
#### Could not parse launch file. Error at line 0.
ui: missing resource: java.util.MissingResourceException: Can't find resource for bundle com.sun.deploy.resources.Deployment, key Ok
Original trace with error:
http://aurora-ds3.us.oracle.com:9502/runs/00786/786396.SCA-DEP-PROMOTION/786396.SCA-DEP-PROMOTION-1/reports/html/javaws/batJavaws/BatJavawsTest_testBAT.trace