diff -r 4499f290d3ce core.netigso/src/org/netbeans/core/netigso/Netigso.java
--- a/core.netigso/src/org/netbeans/core/netigso/Netigso.java	Tue Dec 13 12:34:52 2011 +0100
+++ b/core.netigso/src/org/netbeans/core/netigso/Netigso.java	Thu Dec 15 09:52:27 2011 +0100
@@ -248,6 +248,21 @@
             if (knownPkgs == EMPTY) {
                 try {
                     SELF_QUERY.set(true);
+                    String hints = (String)m.getAttribute("Hint-Packages");
+                    if (hints != null) {
+                        pkgs.addAll(Arrays.asList(hints.split(",")));
+                        Object exported = m.getAttribute("Export-Package");
+                        if (exported instanceof String) {
+                            for (String p : exported.toString().split(",")) { // NOI18N
+                                int semic = p.indexOf(';');
+                                if (semic >= 0) {
+                                    p = p.substring(0, semic);
+                                }
+                                pkgs.add(p);
+                            }
+                        }
+                    }
+                    /*
                     Enumeration en = b.findEntries("", null, true);
                     if (en == null) {
                         LOG.log(Level.INFO, "Bundle {0}: {1} is empty", new Object[] { b.getBundleId(), b.getSymbolicName() });
@@ -270,7 +285,7 @@
                             }
                             pkgs.add(p);
                         }
-                    }
+                    }*/
                 } finally {
                     SELF_QUERY.set(false);
                 }
@@ -291,9 +306,9 @@
                 LOG.log(Level.FINE, "Starting bundle {0}: {1}", new Object[] { m.getCodeNameBase(), start });
                 if (start) {
                     b.start();
-                    if (b.getState() == Bundle.INSTALLED && isRealBundle(b)) {
-                        throw new IOException("Cannot start " + m.getCodeName() + " state remains INSTALLED after start()"); // NOI18N
-                    }
+//                    if (b.getState() == Bundle.INSTALLED && isRealBundle(b)) {
+    //                    throw new IOException("Cannot start " + m.getCodeName() + " state remains INSTALLED after start()"); // NOI18N
+  //                  }
                 }
             } catch (BundleException possible) {
                 if (isRealBundle(b)) {
diff -r 4499f290d3ce core.startup/src/org/netbeans/core/startup/NbInstaller.java
--- a/core.startup/src/org/netbeans/core/startup/NbInstaller.java	Tue Dec 13 12:34:52 2011 +0100
+++ b/core.startup/src/org/netbeans/core/startup/NbInstaller.java	Thu Dec 15 09:52:27 2011 +0100
@@ -73,14 +73,7 @@
 import java.util.jar.Manifest;
 import java.util.logging.Level;
 import java.util.logging.Logger;
-import org.netbeans.Events;
-import org.netbeans.InvalidException;
-import org.netbeans.Module;
-import org.netbeans.ModuleInstaller;
-import org.netbeans.ModuleManager;
-import org.netbeans.ProxyClassLoader;
-import org.netbeans.Stamps;
-import org.netbeans.Util;
+import org.netbeans.*;
 import org.netbeans.core.startup.layers.ModuleLayeredFileSystem;
 import org.openide.filesystems.FileObject;
 import org.openide.filesystems.FileStateInvalidException;
diff -r 4499f290d3ce o.n.bootstrap/src/org/netbeans/JarClassLoader.java
--- a/o.n.bootstrap/src/org/netbeans/JarClassLoader.java	Tue Dec 13 12:34:52 2011 +0100
+++ b/o.n.bootstrap/src/org/netbeans/JarClassLoader.java	Thu Dec 15 09:52:27 2011 +0100
@@ -522,6 +522,31 @@
             if (init != null) init.run();
             return callGet();
         }
+
+        static void listCoveredPackages(JarFile src, Set<String> known, StringBuffer save) {
+            Enumeration<JarEntry> en = src.entries();
+            while (en.hasMoreElements()) {
+                JarEntry je = en.nextElement();
+                if (! je.isDirectory()) {
+                    String itm = je.getName();
+                    int slash = itm.lastIndexOf('/');
+                    if (slash == -1) {
+                        // resource in default package
+                        String res = "default/" + je.getName();
+                        if (known.add(res)) {
+                            save.append(res).append(',');
+                        }
+                        continue;
+                    }
+                    String pkg = slash > 0 ? itm.substring(0, slash).replace('/','.') : "";
+                    if (known.add(pkg)) save.append(pkg).append(',');
+                    if (itm.startsWith("META-INF/")) {
+                            String res = itm.substring(8); // "/services/pkg.Service"
+                            if (known.add(res)) save.append(res).append(',');
+                    }
+                }
+            }
+        }
         
         private void releaseJarFile() {
             synchronized(sources) {
@@ -590,29 +615,7 @@
         protected void listCoveredPackages(Set<String> known, StringBuffer save) {
             try {
                 JarFile src = getJarFile("pkg");
-
-                Enumeration<JarEntry> en = src.entries();
-                while (en.hasMoreElements()) {
-                    JarEntry je = en.nextElement();
-                    if (! je.isDirectory()) {
-                        String itm = je.getName();
-                        int slash = itm.lastIndexOf('/');
-                        if (slash == -1) {
-                            // resource in default package
-                            String res = "default/" + je.getName();
-                            if (known.add(res)) {
-                                save.append(res).append(',');
-                            }
-                            continue;
-                        }
-                        String pkg = slash > 0 ? itm.substring(0, slash).replace('/','.') : "";
-                        if (known.add(pkg)) save.append(pkg).append(',');
-                        if (itm.startsWith("META-INF/")) {
-                                String res = itm.substring(8); // "/services/pkg.Service"
-                                if (known.add(res)) save.append(res).append(',');
-                        }
-                    }
-                }
+                listCoveredPackages(src, known, save);
             } catch (ZipException x) { // Unix
                 if (warnedFiles.add(file)) {
                     LOGGER.log(Level.INFO, "Cannot open " + file, x);
diff -r 4499f290d3ce o.n.bootstrap/src/org/netbeans/ModuleInstaller.java
--- a/o.n.bootstrap/src/org/netbeans/ModuleInstaller.java	Tue Dec 13 12:34:52 2011 +0100
+++ b/o.n.bootstrap/src/org/netbeans/ModuleInstaller.java	Thu Dec 15 09:52:27 2011 +0100
@@ -46,6 +46,7 @@
 
 import java.io.File;
 import java.io.IOException;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
 import java.util.jar.JarFile;
@@ -187,6 +188,12 @@
         try {
             Manifest m = jarFile.getManifest();
             if (m == null) throw new IOException("No manifest found in " + jar); // NOI18N
+            if (!m.getMainAttributes().containsKey("Covered-Packages")) { // NOI18N
+                Set<String> known = new HashSet<String>();
+                StringBuffer sb = new StringBuffer();
+                JarClassLoader.JarSource.listCoveredPackages(jarFile, known, sb);
+                m.getMainAttributes().putValue("Hint-Packages", sb.toString()); // NOI18N
+            }
             return m;
         } finally {
             jarFile.close();