Steps to reproduce:
1. Install 8u11-b04 and set security level to medium from JCP
2. Clear cache: javaws -uninstall
3. Launch app that has java-vm-args with length exceeded 512 chars by browser.(Input the url into browser's address area and press Enter. And then select javaws to launch it if necessary): http://kgb.us.oracle.com:8080/JawsSecurity/jnlp/testIllegalArg.jnlp
4.Accept security warning dialog promoted
5.If app failed to get loaded with the following exception, then this bug is reproduced:
CouldNotLoadArgumentException[ Could not load file/URL specified: C:\Users\wenjyang\AppData\LocalLow\Sun\Java\Deployment\cache\6.0\7\10fd2b07-43f341ac]
at com.sun.javaws.Main.launchApp(Unknown Source)
at com.sun.javaws.Main.continueInSecureThread(Unknown Source)
at com.sun.javaws.Main.access$000(Unknown Source)
at com.sun.javaws.Main$1.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Expected behavior: App should get loaded successfully.
Actual behavior: App gets blocked due to CouldNotLoadArgumentException.
Note: with jre8-b123, app can get loaded successfully.