Problem with drag-&-drop in JInternalFrame

Hi! I have a problem using drag-&-drop with blackdown´s JDK 1.2. Everything is allright in normal applications, but when I place the DnD-components in a JInternalFrame I get this execption:

Problem with Swing: can't load LookAndFeel-class

Hi! I have a problem running Swing-applications with the new Blackdown JDK1.2.2 RC3. The following program --- import javax.swing.*; public class UIManagerDefaults { public static void main(String[] args) { System.out.println("Default L&F: " + UIManager.getLookAndFee