Changes in Java Web Start in Java SE 6 update 7 have broken Java Web Start
support in GlassFish.
An API we have been using that returned a file's cached location (which the ACC
uses to open the app client archive) in earlier updates now returns an empty
string for security reasons.
As a temporary workaround, users can remain on Java SE 6 update 6.
I am looking at how best to address this.