Sun GlassFish Enterprise Server v3 Release Notes

Description

The ACC expects the current thread's context class loader to be an ACCClassLoader. This is overly restrictive. Although this condition is met for appclient script and Java Web Start launches, it might not be met for the embedded case. Other functions inside the ACC require the class loader to be a URLClassLoader (or an instance of a subclass of URLClassLoader), but the loader does not need to be an ACCClassLoader.

For more information, see Issue report.