diff --git a/inventory/src/main/java/org/apache/felix/inventory/impl/Activator.java b/inventory/src/main/java/org/apache/felix/inventory/impl/Activator.java
index c3498485ee..3457e315f2 100644
--- a/inventory/src/main/java/org/apache/felix/inventory/impl/Activator.java
+++ b/inventory/src/main/java/org/apache/felix/inventory/impl/Activator.java
@@ -29,9 +29,9 @@
 public class Activator implements BundleActivator
 {
 
-    private static Object logService;
+    private static LogService logService;
 
-    private ServiceTracker logServiceTracker;
+    private ServiceTracker<LogService, LogService> logServiceTracker;
 
     private InventoryPrinterManagerImpl printerManager;
 
@@ -42,17 +42,17 @@ public class Activator implements BundleActivator
      */
     public void start(final BundleContext context) throws Exception
     {
-        this.logServiceTracker = new ServiceTracker(context, "org.osgi.service.log.LogService", null)
+        this.logServiceTracker = new ServiceTracker<LogService, LogService>(context, LogService.class, null)
         {
             @Override
-            public Object addingService(ServiceReference reference)
+            public LogService addingService(ServiceReference<LogService> reference)
             {
                 Activator.logService = super.addingService(reference);
                 return Activator.logService;
             }
 
             @Override
-            public void removedService(ServiceReference reference, Object service)
+            public void removedService(ServiceReference<LogService> reference, LogService service)
             {
                 Activator.logService = null;
                 super.removedService(reference, service);
@@ -87,12 +87,11 @@ public void stop(final BundleContext context) throws Exception
         }
     }
 
-    public static void log(final ServiceReference sr, final int level, final String message, final Throwable exception)
+    public static void log(final int level, final String message, final Throwable exception)
     {
-        Object logService = Activator.logService;
-        if (logService != null)
+        if (Activator.logService != null)
         {
-            ((LogService) logService).log(sr, level, message, exception);
+            Activator.logService.log(level, message, exception);
         }
         else
         {
@@ -116,10 +115,10 @@ public static void log(final ServiceReference sr, final int level, final String
                     code = "*DEBUG*";
             }
 
-            System.out.println(code + " " + message);
+            System.err.println(code + " " + message);
             if (exception != null)
             {
-                exception.printStackTrace(System.out);
+                exception.printStackTrace(System.err);
             }
         }
     }
diff --git a/inventory/src/main/java/org/apache/felix/inventory/impl/webconsole/ConfigurationPrinterAdapter.java b/inventory/src/main/java/org/apache/felix/inventory/impl/webconsole/ConfigurationPrinterAdapter.java
index ae177d72d7..f366b3de88 100644
--- a/inventory/src/main/java/org/apache/felix/inventory/impl/webconsole/ConfigurationPrinterAdapter.java
+++ b/inventory/src/main/java/org/apache/felix/inventory/impl/webconsole/ConfigurationPrinterAdapter.java
@@ -17,6 +17,7 @@
 package org.apache.felix.inventory.impl.webconsole;
 
 import java.io.PrintWriter;
+import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.lang.reflect.Modifier;
 import java.net.URL;
@@ -26,7 +27,9 @@
 import java.util.Set;
 
 import org.apache.felix.inventory.Format;
+import org.apache.felix.inventory.impl.Activator;
 import org.osgi.framework.ServiceReference;
+import org.osgi.service.log.LogService;
 
 /**
  * Helper class for a configuration printer.
@@ -312,9 +315,27 @@ private static Object invoke(final Object obj, final Method m, final Object[] ar
         {
             return m.invoke(obj, args);
         }
-        catch (final Throwable e)
+        catch (InvocationTargetException ite)
         {
-            // ignore
+            Activator.log(
+                LogService.LOG_ERROR,
+                String.format(
+                        "Error invoking method '%s' on %s: %s",
+                        m.getName(),
+                        obj.getClass(),
+                       ite.getTargetException().getMessage()),
+                ite.getTargetException());
+        }
+        catch (IllegalAccessException iae)
+        {
+            Activator.log(
+                LogService.LOG_ERROR,
+                String.format(
+                        "Illegal access while invoking method '%s' on %s: %s",
+                        m.getName(),
+                        obj.getClass(),
+                        iae.getMessage()),
+                iae);
         }
         return null;
     }