I'm currently developing a Java-application, which is deployed via Java Web Start. Because this application needs access to the file system, the Java-plugin must be configured in Safari to "Run in Unsafe Mode" (cfr. instructions here). This works fine on most systems, but on one particular system this setting won't change: after selecting the option in the Menu, and confirming that I trust the website, the dropdown-box stays fixed at "Ask".
What can I do to solve this problem? The system is running an up-to-date version of OSX Mavericks.