Currently the Web Console requires some methods that are JDK 1.4+ specific.
In some embedded JVM the methods are not available.
However, it's not needed to sync with each embedded JVM but make sure to run at least at OSGi/Minimum-1.0 Execution Environment.
The problem methods are:
String.matches(pattern); (LicenseServlet & BundlesServlet)
The class LinkedHashMap is missing in OSGi/Minimum-1.0 EE but used in the ConfigurationListener.