src/macosx/classes/sun/lwawt/macosx/CDragSourceContextPeer.java

*** 108,117 ****
--- 108,118 ----
          }
  
          //It sure will be LWComponentPeer instance as rootComponent is a Window
          PlatformWindow platformWindow = ((LWComponentPeer)rootComponent.getPeer()).getPlatformWindow();
          long nativeViewPtr = CPlatformWindow.getNativeViewPtr(platformWindow);
+         if (nativeViewPtr == 0L) return; // Unsupported
  
          // If there isn't any drag image make one of default appearance:
          if (fDragImage == null)
              this.setDefaultDragImage(component);