使用扩展点：找不到可配置的元素

Question

i created an extension point for one plugin(A). Another plugin(B) is setup as an extension to the ep from the first plugin.

When trying to use the extension point eclipse in A eclipse tells me that, it is not able to find configurable elements for the this extension point. The extension point itself is found.

I'm suspecting plugin B is not started at all. How can i check this?

Here is the code, where the extension point gets called:

IExtensionRegistry extensionRegistry = Platform.getExtensionRegistry();
        IExtensionPoint[] extensionPoints = extensionRegistry.getExtensionPoints("A.extensionpoints");
        //Prints both defined EP's
        for (IExtensionPoint iExtensionPoint : extensionPoints) {
            System.err.println(iExtensionPoint.getUniqueIdentifier());
            System.err.println(iExtensionPoint.getExtensions().length); 
        }
        IExtensionPoint extensionPoint = extensionRegistry.getExtensionPoint("A.extensionpoints.HavingProblemsWith");
        System.err.println(extensionPoint.getLabel());//Prints the Label
        System.err.println(extensionPoint.getConfigurationElements().length);// => 0

Answer 1

Fire up eclipse with the -console option. Then you have tools to view the status of the plugins and to start them, if you want so. It may give you some ideas on why the plugin hasn't been started.