diff -r 4103448f9b46 core.startup/src/org/netbeans/core/startup/layers/BinaryFS.java
--- a/core.startup/src/org/netbeans/core/startup/layers/BinaryFS.java	Fri Aug 15 11:40:20 2008 +0200
+++ b/core.startup/src/org/netbeans/core/startup/layers/BinaryFS.java	Fri Aug 15 12:06:06 2008 +0200
@@ -48,6 +48,7 @@
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
+import java.lang.reflect.Constructor;
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
 import java.net.URL;
@@ -489,7 +490,9 @@
                         if (SharedClassObject.class.isAssignableFrom(cls)) {
                             return SharedClassObject.findObject(cls.asSubclass(SharedClassObject.class), true);
                         } else {
-                            return cls.newInstance();
+                            Constructor<?> init = cls.getDeclaredConstructor();
+                            init.setAccessible(true);
+                            return init.newInstance((Object[]) null);
                         }
 
                     case 12: // serialvalue
diff -r 4103448f9b46 openide.filesystems/src/org/openide/filesystems/XMLMapAttr.java
--- a/openide.filesystems/src/org/openide/filesystems/XMLMapAttr.java	Fri Aug 15 11:40:20 2008 +0200
+++ b/openide.filesystems/src/org/openide/filesystems/XMLMapAttr.java	Fri Aug 15 12:06:06 2008 +0200
@@ -886,7 +886,9 @@
                         if (SharedClassObject.class.isAssignableFrom(cls)) {
                             return SharedClassObject.findObject(cls, true);
                         } else {
-                            return cls.newInstance();
+                            Constructor<?> init = cls.getDeclaredConstructor();
+                            init.setAccessible(true);
+                            return init.newInstance((Object[]) null);
                         }
                     case 13:
                         String[] arr = value.split("#", 2); // NOI18N
diff -r 4103448f9b46 openide.filesystems/test/unit/src/org/openide/filesystems/XMLFileSystemTestHid.java
--- a/openide.filesystems/test/unit/src/org/openide/filesystems/XMLFileSystemTestHid.java	Fri Aug 15 11:40:20 2008 +0200
+++ b/openide.filesystems/test/unit/src/org/openide/filesystems/XMLFileSystemTestHid.java	Fri Aug 15 12:06:06 2008 +0200
@@ -426,6 +426,30 @@
         return map.get("displayName");
     }
 
+    public  static class Value {
+        private Value() { }
+    }
+    public void testNewValueForNonPublicConstructor() throws Exception {
+        File f = writeFile("layer3.xml",
+                "<filesystem>\n" +
+                "<folder name='TestModule'>\n" +
+                "<file name='sample.txt' >" +
+                "  <attr name='v' newvalue='org.openide.filesystems.XMLFileSystemTestHid$Value'/>" +
+                "</file>\n" +
+                "</folder>\n" +
+                "</filesystem>\n"
+                );
+              
+        xfs = FileSystemFactoryHid.createXMLSystem(getName(), this, f.toURL());
+        FileObject fo = xfs.findResource ("TestModule/sample.txt");
+        assertNotNull(fo);
+
+        Object v = fo.getAttribute("v");
+        assertNotNull("Attribute found", v);
+        assertEquals("Right type", Value.class, v.getClass());
+        
+    }
+
     public void testVariousXMLAttributes() throws Exception {
         URL attribs = XMLFileSystemTestHid.class.getResource("test-layer-attribs.xml");
         xfs = FileSystemFactoryHid.createXMLSystem(getName(), this, attribs);
diff -r 4103448f9b46 openide.loaders/src/org/openide/loaders/InstanceSupport.java
--- a/openide.loaders/src/org/openide/loaders/InstanceSupport.java	Fri Aug 15 11:40:20 2008 +0200
+++ b/openide.loaders/src/org/openide/loaders/InstanceSupport.java	Fri Aug 15 12:06:06 2008 +0200
@@ -216,7 +216,9 @@
                     return SharedClassObject.findObject (c.asSubclass(SharedClassObject.class), true);
                 } else {
                     // create new instance
-                    return c.newInstance();
+                    Constructor<?> init = c.getDeclaredConstructor();
+                    init.setAccessible(true);
+                    return init.newInstance((Object[]) null);
                 }
             }
         } catch (IOException ex) {
diff -r 4103448f9b46 openide.loaders/test/unit/src/org/openide/loaders/InstanceDataObjectTest.java
--- a/openide.loaders/test/unit/src/org/openide/loaders/InstanceDataObjectTest.java	Fri Aug 15 11:40:20 2008 +0200
+++ b/openide.loaders/test/unit/src/org/openide/loaders/InstanceDataObjectTest.java	Fri Aug 15 12:06:06 2008 +0200
@@ -255,7 +255,7 @@
     }
     
     public static class TestDefinitions implements Runnable {
-        public TestDefinitions() {}
+        TestDefinitions() {}
         
         static TestDefinitions create() {
             return new TestDefinitions();